[Push] Add feature flag for push subscriptions with expiration time

This CL enables Push Subscriptions to support a expiration time, set by
Chrome in push_messaging_constants.h (currently 90 days). This feature
is disabled by default, so to try it out you must set --enable-features=
PushSubscriptionWithExpirationTime.

3 BrowserTests are added to check the expiration time behaviour when the
flag is set or not set.

The expiration time is set in PushMessagingServiceImpl when a
subscription is made and saved by PushMessagingAppIdentifier in the
browser preference. The following CLs prepare for this change:

1. 2292292: [Push] Add expirationTime attribute to PushSubscription
https://chromium-review.googlesource.com/c/chromium/src/+/2292292

2. 2302192: [Push] Pass expirationTime attribute from
PushMessagingService to PushManager
https://chromium-review.googlesource.com/c/chromium/src/+/2302192

3. 2315682: [Push] Add expiration time property in app identifier
https://chromium-review.googlesource.com/c/chromium/src/+/2315682


Bug: 1104215
Change-Id: I341f05096fa57246fa18cb338a1a59f7a1ae01ee
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2302610Reviewed-by: Peter Beverloo <peter@chromium.org>
Reviewed-by: Richard Knoll <knollr@chromium.org>
Reviewed-by: Rayan Kanso <rayankans@chromium.org>
Commit-Queue: Viviane Yang <viviy@google.com>
Cr-Commit-Position: refs/heads/master@{#793653}

chrome/browser/push_messaging/push_messaging_app_identifier.cc

@@ -34,16 +34,16 @@ constexpr size_t kGuidLength = 36;  // "%08X-%04X-%04X-%04X-%012llX"
 
 std::string FromTimeToString(base::Time time) {
   DCHECK(!time.is_null());
-  return base::NumberToString(time.ToDeltaSinceWindowsEpoch().InSeconds());
+  return base::NumberToString(time.ToDeltaSinceWindowsEpoch().InMilliseconds());
 }
 
 bool FromStringToTime(const std::string& time_string,
                       base::Optional<base::Time>* time) {
   DCHECK(!time_string.empty());
-  int64_t seconds;
-  if (base::StringToInt64(time_string, &seconds) && seconds > 0) {
+  int64_t milliseconds;
+  if (base::StringToInt64(time_string, &milliseconds) && milliseconds > 0) {
     *time = base::make_optional(base::Time::FromDeltaSinceWindowsEpoch(
-        base::TimeDelta::FromSeconds(seconds)));
+        base::TimeDelta::FromMilliseconds(milliseconds)));
     return true;
   }
   return false;
@@ -75,9 +75,8 @@ bool DisassemblePrefValue(const std::string& pref_value,
     return false;
 
   *origin = GURL(parts[0]);
-  if (!origin->is_valid()) {
+  if (!origin->is_valid())
     return false;
-  }
 
   if (parts.size() == 3)
     return FromStringToTime(parts[2], expiration_time);

chrome/browser/push_messaging/push_messaging_app_identifier.h

@@ -100,6 +100,10 @@ class PushMessagingAppIdentifier {
     return service_worker_registration_id_;
   }
 
+  void set_expiration_time(const base::Optional<base::Time>& expiration_time) {
+    expiration_time_ = expiration_time;
+  }
+
   base::Optional<base::Time> expiration_time() const {
     DCHECK(!is_null());
     return expiration_time_;

chrome/browser/push_messaging/push_messaging_browsertest.cc

@@ -2627,7 +2627,8 @@ class PushMessagingDisallowSenderIdsBrowserTest
     : public PushMessagingBrowserTest {
  public:
   PushMessagingDisallowSenderIdsBrowserTest() {
-    scoped_feature_list_.InitAndEnableFeature(kPushMessagingDisallowSenderIDs);
+    scoped_feature_list_.InitAndEnableFeature(
+        features::kPushMessagingDisallowSenderIDs);
   }
 
   ~PushMessagingDisallowSenderIdsBrowserTest() override = default;
@@ -2660,3 +2661,109 @@ IN_PROC_BROWSER_TEST_F(PushMessagingDisallowSenderIdsBrowserTest,
       "supported, please upgrade to VAPID authentication instead",
       script_result);
 }
+
+class PushSubscriptionWithExpirationTimeTest : public PushMessagingBrowserTest {
+ public:
+  PushSubscriptionWithExpirationTimeTest() {
+    scoped_feature_list_.InitAndEnableFeature(
+        features::kPushSubscriptionWithExpirationTime);
+  }
+
+  ~PushSubscriptionWithExpirationTimeTest() override = default;
+
+  // Checks whether |expiration_time| lies in the future and is in the
+  // valid format (seconds elapsed since Unix time)
+  bool IsExpirationTimeValid(const std::string& expiration_time);
+
+ private:
+  base::test::ScopedFeatureList scoped_feature_list_;
+};
+
+bool PushSubscriptionWithExpirationTimeTest::IsExpirationTimeValid(
+    const std::string& expiration_time) {
+  int64_t output;
+  if (!base::StringToInt64(expiration_time, &output))
+    return false;
+  return base::Time::Now().ToJsTimeIgnoringNull() < output;
+}
+
+IN_PROC_BROWSER_TEST_F(PushSubscriptionWithExpirationTimeTest,
+                       SubscribeGetSubscriptionWithExpirationTime) {
+  std::string script_result;
+
+  ASSERT_TRUE(RunScript("registerServiceWorker()", &script_result));
+  ASSERT_EQ("ok - service worker registered", script_result);
+
+  ASSERT_NO_FATAL_FAILURE(RequestAndAcceptPermission());
+
+  LoadTestPage();  // Reload to become controlled.
+
+  ASSERT_TRUE(RunScript("isControlled()", &script_result));
+  ASSERT_EQ("true - is controlled", script_result);
+
+  // Subscribe with expiration time enabled, should get a subscription with
+  // expiration time in the future back
+  std::string subscription_expiration_time;
+  ASSERT_TRUE(RunScript("documentSubscribePushGetExpirationTime()",
+                        &subscription_expiration_time));
+  EXPECT_TRUE(IsExpirationTimeValid(subscription_expiration_time));
+
+  std::string get_subscription_expiration_time;
+  // Get subscription should also yield a subscription with expiration time
+  ASSERT_TRUE(RunScript("GetSubscriptionExpirationTime()",
+                        &get_subscription_expiration_time));
+  EXPECT_TRUE(IsExpirationTimeValid(get_subscription_expiration_time));
+  // Both methods should return the same expiration time
+  ASSERT_EQ(subscription_expiration_time, get_subscription_expiration_time);
+}
+
+IN_PROC_BROWSER_TEST_F(PushSubscriptionWithExpirationTimeTest,
+                       GetSubscriptionWithExpirationTime) {
+  std::string script_result;
+
+  ASSERT_NO_FATAL_FAILURE(SubscribeSuccessfully());
+
+  ASSERT_TRUE(RunScript("hasSubscription()", &script_result));
+  EXPECT_EQ("true - subscribed", script_result);
+
+  // Get subscription should also yield a subscription with expiration time
+  ASSERT_TRUE(RunScript("GetSubscriptionExpirationTime()", &script_result));
+  EXPECT_TRUE(IsExpirationTimeValid(script_result));
+}
+
+class PushSubscriptionWithoutExpirationTimeTest
+    : public PushMessagingBrowserTest {
+ public:
+  PushSubscriptionWithoutExpirationTimeTest() {
+    // Override current feature list to ensure having
+    // |kPushSubscriptionWithExpirationTime| disabled
+    scoped_feature_list_.InitAndDisableFeature(
+        features::kPushSubscriptionWithExpirationTime);
+  }
+
+  ~PushSubscriptionWithoutExpirationTimeTest() override = default;
+
+ private:
+  base::test::ScopedFeatureList scoped_feature_list_;
+};
+
+IN_PROC_BROWSER_TEST_F(PushSubscriptionWithoutExpirationTimeTest,
+                       SubscribeDocumentExpirationTimeNull) {
+  std::string script_result;
+
+  ASSERT_TRUE(RunScript("registerServiceWorker()", &script_result));
+  ASSERT_EQ("ok - service worker registered", script_result);
+
+  ASSERT_NO_FATAL_FAILURE(RequestAndAcceptPermission());
+
+  LoadTestPage();  // Reload to become controlled.
+
+  ASSERT_TRUE(RunScript("isControlled()", &script_result));
+  ASSERT_EQ("true - is controlled", script_result);
+
+  // When |features::kPushSubscriptionWithExpirationTime| is disabled,
+  // expiration time should be null
+  ASSERT_TRUE(
+      RunScript("documentSubscribePushGetExpirationTime()", &script_result));
+  EXPECT_EQ("null", script_result);
+}

chrome/browser/push_messaging/push_messaging_constants.h

@@ -5,10 +5,18 @@
 #ifndef CHROME_BROWSER_PUSH_MESSAGING_PUSH_MESSAGING_CONSTANTS_H_
 #define CHROME_BROWSER_PUSH_MESSAGING_PUSH_MESSAGING_CONSTANTS_H_
 
+#include "base/time/time.h"
+
 extern const char kPushMessagingGcmEndpoint[];
 
 // The tag of the notification that will be automatically shown if a webapp
 // receives a push message then fails to show a notification.
 extern const char kPushMessagingForcedNotificationTag[];
 
+// Chrome decided cadence on subscription refreshes. According to the standards:
+// https://w3c.github.io/push-api/#dfn-subscription-expiration-time it is
+// optional and set by the browser.
+constexpr base::TimeDelta kPushSubscriptionExpirationPeriodTimeDelta =
+    base::TimeDelta::FromDays(90);
+
 #endif  // CHROME_BROWSER_PUSH_MESSAGING_PUSH_MESSAGING_CONSTANTS_H_

chrome/browser/push_messaging/push_messaging_features.cc

@@ -4,5 +4,12 @@
 
 #include "chrome/browser/push_messaging/push_messaging_features.h"
 
+namespace features {
+
 const base::Feature kPushMessagingDisallowSenderIDs{
     "PushMessagingDisallowSenderIDs", base::FEATURE_DISABLED_BY_DEFAULT};
+
+const base::Feature kPushSubscriptionWithExpirationTime{
+    "PushSubscriptionWithExpirationTime", base::FEATURE_DISABLED_BY_DEFAULT};
+
+}  // namespace features

chrome/browser/push_messaging/push_messaging_features.h

@@ -7,7 +7,15 @@
 
 #include "base/feature_list.h"
 
+namespace features {
+
 // Feature flag to disallow creation of push messages with GCM Sender IDs.
 extern const base::Feature kPushMessagingDisallowSenderIDs;
 
+// Feature flag to enable push subscription with expiration times specified in
+// /chrome/browser/push_messaging/push_messaging_constants.h
+extern const base::Feature kPushSubscriptionWithExpirationTime;
+
+}  // namespace features
+
 #endif  // CHROME_BROWSER_PUSH_MESSAGING_PUSH_MESSAGING_FEATURES_H_

chrome/browser/push_messaging/push_messaging_service_impl.cc

@@ -55,6 +55,7 @@
 #include "content/public/browser/storage_partition.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/child_process_host.h"
+#include "content/public/common/content_features.h"
 #include "content/public/common/content_switches.h"
 #include "third_party/blink/public/mojom/permissions/permission_status.mojom.h"
 #include "third_party/blink/public/mojom/push_messaging/push_messaging_status.mojom.h"
@@ -589,7 +590,7 @@ void PushMessagingServiceImpl::SubscribeFromDocument(
       ContentSettingsType::NOTIFICATIONS, render_frame_host, requesting_origin,
       user_gesture,
       base::BindOnce(&PushMessagingServiceImpl::DoSubscribe,
-                     weak_factory_.GetWeakPtr(), app_identifier,
+                     weak_factory_.GetWeakPtr(), std::move(app_identifier),
                      std::move(options), std::move(callback), render_process_id,
                      render_frame_id));
 }
@@ -627,7 +628,8 @@ void PushMessagingServiceImpl::SubscribeFromWorker(
     return;
   }
 
-  DoSubscribe(app_identifier, std::move(options), std::move(register_callback),
+  DoSubscribe(std::move(app_identifier), std::move(options),
+              std::move(register_callback),
               /* render_process_id= */ -1, /* render_frame_id= */ -1,
               CONTENT_SETTING_ALLOW);
 }
@@ -653,7 +655,7 @@ bool PushMessagingServiceImpl::SupportNonVisibleMessages() {
 }
 
 void PushMessagingServiceImpl::DoSubscribe(
-    const PushMessagingAppIdentifier& app_identifier,
+    PushMessagingAppIdentifier app_identifier,
     blink::mojom::PushSubscriptionOptionsPtr options,
     RegisterCallback register_callback,
     int render_process_id,
@@ -679,7 +681,8 @@ void PushMessagingServiceImpl::DoSubscribe(
     content::RenderFrameHost* main_frame =
         GetMainFrameForRenderFrameHost(render_frame_host);
 
-    if (base::FeatureList::IsEnabled(kPushMessagingDisallowSenderIDs)) {
+    if (base::FeatureList::IsEnabled(
+            features::kPushMessagingDisallowSenderIDs)) {
       if (main_frame) {
         main_frame->AddMessageToConsole(
             blink::mojom::ConsoleMessageLevel::kError,
@@ -698,11 +701,21 @@ void PushMessagingServiceImpl::DoSubscribe(
 
   IncreasePushSubscriptionCount(1, true /* is_pending */);
 
+  // Set time to live for GCM registration
+  base::TimeDelta ttl = base::TimeDelta();
+
+  if (base::FeatureList::IsEnabled(
+          features::kPushSubscriptionWithExpirationTime)) {
+    app_identifier.set_expiration_time(
+        base::Time::Now() + kPushSubscriptionExpirationPeriodTimeDelta);
+    DCHECK(app_identifier.expiration_time());
+    ttl = kPushSubscriptionExpirationPeriodTimeDelta;
+  }
+
   GetInstanceIDDriver()
       ->GetInstanceID(app_identifier.app_id())
       ->GetToken(NormalizeSenderInfo(application_server_key_string), kGCMScope,
-                 base::TimeDelta() /* time_to_live */,
-                 std::map<std::string, std::string>() /* options */,
+                 ttl, std::map<std::string, std::string>() /* options */,
                  {} /* flags */,
                  base::BindOnce(&PushMessagingServiceImpl::DidSubscribe,
                                 weak_factory_.GetWeakPtr(), app_identifier,
@@ -714,12 +727,12 @@ void PushMessagingServiceImpl::SubscribeEnd(
     RegisterCallback callback,
     const std::string& subscription_id,
     const GURL& endpoint,
+    const base::Optional<base::Time>& expiration_time,
     const std::vector<uint8_t>& p256dh,
     const std::vector<uint8_t>& auth,
     blink::mojom::PushRegistrationStatus status) {
-  std::move(callback).Run(subscription_id, endpoint,
-                          base::nullopt /* expiration_time*/, p256dh, auth,
-                          status);
+  std::move(callback).Run(subscription_id, endpoint, expiration_time, p256dh,
+                          auth, status);
 }
 
 void PushMessagingServiceImpl::SubscribeEndWithError(
@@ -727,6 +740,7 @@ void PushMessagingServiceImpl::SubscribeEndWithError(
     blink::mojom::PushRegistrationStatus status) {
   SubscribeEnd(std::move(callback), std::string() /* subscription_id */,
                GURL::EmptyGURL() /* endpoint */,
+               base::nullopt /* expiration_time */,
                std::vector<uint8_t>() /* p256dh */,
                std::vector<uint8_t>() /* auth */, status);
 }
@@ -793,6 +807,7 @@ void PushMessagingServiceImpl::DidSubscribeWithEncryptionInfo(
   IncreasePushSubscriptionCount(1, false /* is_pending */);
 
   SubscribeEnd(std::move(callback), subscription_id, endpoint,
+               app_identifier.expiration_time(),
                std::vector<uint8_t>(p256dh.begin(), p256dh.end()),
                std::vector<uint8_t>(auth_secret.begin(), auth_secret.end()),
                blink::mojom::PushRegistrationStatus::SUCCESS_FROM_PUSH_SERVICE);
@@ -800,8 +815,6 @@ void PushMessagingServiceImpl::DidSubscribeWithEncryptionInfo(
 
 // GetSubscriptionInfo methods -------------------------------------------------
 
-// TODO(crbug.com/1104215): Get |expiration_time| from |app_identifier|, where
-// it is stored in profile preferences
 void PushMessagingServiceImpl::GetSubscriptionInfo(
     const GURL& origin,
     int64_t service_worker_registration_id,
@@ -822,10 +835,12 @@ void PushMessagingServiceImpl::GetSubscriptionInfo(
 
   const GURL endpoint = CreateEndpoint(subscription_id);
   const std::string& app_id = app_identifier.app_id();
+  base::Optional<base::Time> expiration_time = app_identifier.expiration_time();
+
   base::OnceCallback<void(bool)> validate_cb =
       base::BindOnce(&PushMessagingServiceImpl::DidValidateSubscription,
                      weak_factory_.GetWeakPtr(), app_id, sender_id, endpoint,
-                     std::move(callback));
+                     expiration_time, std::move(callback));
 
   if (PushMessagingAppIdentifier::UseInstanceID(app_id)) {
     GetInstanceIDDriver()->GetInstanceID(app_id)->ValidateToken(
@@ -842,6 +857,7 @@ void PushMessagingServiceImpl::DidValidateSubscription(
     const std::string& app_id,
     const std::string& sender_id,
     const GURL& endpoint,
+    const base::Optional<base::Time>& expiration_time,
     SubscriptionInfoCallback callback,
     bool is_valid) {
   if (!is_valid) {
@@ -855,19 +871,20 @@ void PushMessagingServiceImpl::DidValidateSubscription(
   GetEncryptionInfoForAppId(
       app_id, sender_id,
       base::BindOnce(&PushMessagingServiceImpl::DidGetEncryptionInfo,
-                     weak_factory_.GetWeakPtr(), endpoint,
+                     weak_factory_.GetWeakPtr(), endpoint, expiration_time,
                      std::move(callback)));
 }
 
 void PushMessagingServiceImpl::DidGetEncryptionInfo(
     const GURL& endpoint,
+    const base::Optional<base::Time>& expiration_time,
     SubscriptionInfoCallback callback,
     std::string p256dh,
     std::string auth_secret) const {
   // I/O errors might prevent the GCM Driver from retrieving a key-pair.
   bool is_valid = !p256dh.empty();
   std::move(callback).Run(
-      is_valid, endpoint, base::nullopt /* expiration_time */,
+      is_valid, endpoint, expiration_time,
       std::vector<uint8_t>(p256dh.begin(), p256dh.end()),
       std::vector<uint8_t>(auth_secret.begin(), auth_secret.end()));
 }

chrome/browser/push_messaging/push_messaging_service_impl.h

@@ -16,6 +16,7 @@
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "base/optional.h"
+#include "base/time/time.h"
 #include "chrome/browser/push_messaging/push_messaging_notification_manager.h"
 #include "chrome/common/buildflags.h"
 #include "components/content_settings/core/browser/content_settings_observer.h"
@@ -165,7 +166,7 @@ class PushMessagingServiceImpl : public content::PushMessagingService,
 
   // Subscribe methods ---------------------------------------------------------
 
-  void DoSubscribe(const PushMessagingAppIdentifier& app_identifier,
+  void DoSubscribe(PushMessagingAppIdentifier app_identifier,
                    blink::mojom::PushSubscriptionOptionsPtr options,
                    RegisterCallback callback,
                    int render_process_id,
@@ -175,6 +176,7 @@ class PushMessagingServiceImpl : public content::PushMessagingService,
   void SubscribeEnd(RegisterCallback callback,
                     const std::string& subscription_id,
                     const GURL& endpoint,
+                    const base::Optional<base::Time>& expiration_time,
                     const std::vector<uint8_t>& p256dh,
                     const std::vector<uint8_t>& auth,
                     blink::mojom::PushRegistrationStatus status);
@@ -198,13 +200,16 @@ class PushMessagingServiceImpl : public content::PushMessagingService,
 
   // GetSubscriptionInfo methods -----------------------------------------------
 
-  void DidValidateSubscription(const std::string& app_id,
-                               const std::string& sender_id,
-                               const GURL& endpoint,
-                               SubscriptionInfoCallback callback,
-                               bool is_valid);
+  void DidValidateSubscription(
+      const std::string& app_id,
+      const std::string& sender_id,
+      const GURL& endpoint,
+      const base::Optional<base::Time>& expiration_time,
+      SubscriptionInfoCallback callback,
+      bool is_valid);
 
   void DidGetEncryptionInfo(const GURL& endpoint,
+                            const base::Optional<base::Time>& expiration_time,
                             SubscriptionInfoCallback callback,
                             std::string p256dh,
                             std::string auth_secret) const;

chrome/test/data/push_messaging/push_test.js

@@ -140,6 +140,18 @@ function documentSubscribePushWithBase64URLEncodedString() {
   }).catch(sendErrorToTest);
 }
 
+function documentSubscribePushGetExpirationTime() {
+  navigator.serviceWorker.ready.then(function(swRegistration) {
+    return swRegistration.pushManager.subscribe({
+          userVisibleOnly: true,
+          applicationServerKey: kApplicationServerKey.buffer
+        })
+        .then(function(subscription) {
+          sendResultToTest(subscription.expirationTime);
+        });
+  }).catch(sendErrorToTest);
+}
+
 function workerSubscribePush() {
   // Send the message to the worker for it to subscribe
   navigator.serviceWorker.controller.postMessage({command: 'workerSubscribe'});
@@ -176,6 +188,15 @@ function GetP256dh() {
   }).catch(sendErrorToTest);
 }
 
+function GetSubscriptionExpirationTime() {
+  navigator.serviceWorker.ready.then(function(swRegistration) {
+    return swRegistration.pushManager.getSubscription()
+        .then(function(subscription) {
+          sendResultToTest(subscription.expirationTime);
+        });
+  }).catch(sendErrorToTest);
+}
+
 function pushManagerPermissionState() {
   navigator.serviceWorker.ready.then(function(swRegistration) {
     return swRegistration.pushManager.permissionState({userVisibleOnly: true})

content/browser/push_messaging/push_messaging_manager.cc

@@ -535,7 +535,7 @@ void PushMessagingManager::Core::DidRegister(
         FROM_HERE, ServiceWorkerContext::GetCoreThreadId(),
         base::BindOnce(&PushMessagingManager::PersistRegistrationOnSW,
                        sw_parent_, std::move(data), push_subscription_id,
-                       endpoint, p256dh, auth,
+                       endpoint, expiration_time, p256dh, auth,
                        subscription_changed
                            ? blink::mojom::PushRegistrationStatus::
                                  SUCCESS_NEW_SUBSCRIPTION_FROM_PUSH_SERVICE
@@ -555,6 +555,7 @@ void PushMessagingManager::PersistRegistrationOnSW(
     RegisterData data,
     const std::string& push_subscription_id,
     const GURL& endpoint,
+    const base::Optional<base::Time>& expiration_time,
     const std::vector<uint8_t>& p256dh,
     const std::vector<uint8_t>& auth,
     blink::mojom::PushRegistrationStatus status) {
@@ -571,12 +572,13 @@ void PushMessagingManager::PersistRegistrationOnSW(
        {kPushSenderIdServiceWorkerKey, application_server_key}},
       base::BindOnce(&PushMessagingManager::DidPersistRegistrationOnSW,
                      weak_factory_.GetWeakPtr(), std::move(data), endpoint,
-                     p256dh, auth, status));
+                     expiration_time, p256dh, auth, status));
 }
 
 void PushMessagingManager::DidPersistRegistrationOnSW(
     RegisterData data,
     const GURL& endpoint,
+    const base::Optional<base::Time>& expiration_time,
     const std::vector<uint8_t>& p256dh,
     const std::vector<uint8_t>& auth,
     blink::mojom::PushRegistrationStatus push_registration_status,
@@ -584,7 +586,7 @@ void PushMessagingManager::DidPersistRegistrationOnSW(
   DCHECK_CURRENTLY_ON(ServiceWorkerContext::GetCoreThreadId());
   if (service_worker_status == blink::ServiceWorkerStatusCode::kOk) {
     SendSubscriptionSuccess(std::move(data), push_registration_status, endpoint,
-                            p256dh, auth);
+                            expiration_time, p256dh, auth);
   } else {
     // TODO(johnme): Unregister, so PushMessagingServiceImpl can decrease count.
     SendSubscriptionError(std::move(data),
@@ -604,6 +606,7 @@ void PushMessagingManager::SendSubscriptionSuccess(
     RegisterData data,
     blink::mojom::PushRegistrationStatus status,
     const GURL& endpoint,
+    const base::Optional<base::Time>& expiration_time,
     const std::vector<uint8_t>& p256dh,
     const std::vector<uint8_t>& auth) {
   DCHECK_CURRENTLY_ON(ServiceWorkerContext::GetCoreThreadId());
@@ -619,8 +622,8 @@ void PushMessagingManager::SendSubscriptionSuccess(
 
   std::move(data.callback)
       .Run(status, blink::mojom::PushSubscription::New(
-                       endpoint, base::nullopt /* expiration_time */,
-                       std::move(data.options), p256dh, auth));
+                       endpoint, expiration_time, std::move(data.options),
+                       p256dh, auth));
 
   RecordRegistrationStatus(status);
 }

content/browser/push_messaging/push_messaging_manager.h

@@ -78,16 +78,19 @@ class PushMessagingManager : public blink::mojom::PushMessaging {
       blink::ServiceWorkerStatusCode service_worker_status);
 
   // Called via PostTask from UI thread.
-  void PersistRegistrationOnSW(RegisterData data,
-                               const std::string& push_subscription_id,
-                               const GURL& endpoint,
-                               const std::vector<uint8_t>& p256dh,
-                               const std::vector<uint8_t>& auth,
-                               blink::mojom::PushRegistrationStatus status);
+  void PersistRegistrationOnSW(
+      RegisterData data,
+      const std::string& push_subscription_id,
+      const GURL& endpoint,
+      const base::Optional<base::Time>& expiration_time,
+      const std::vector<uint8_t>& p256dh,
+      const std::vector<uint8_t>& auth,
+      blink::mojom::PushRegistrationStatus status);
 
   void DidPersistRegistrationOnSW(
       RegisterData data,
       const GURL& endpoint,
+      const base::Optional<base::Time>& expiration_time,
       const std::vector<uint8_t>& p256dh,
       const std::vector<uint8_t>& auth,
       blink::mojom::PushRegistrationStatus push_registration_status,
@@ -97,11 +100,13 @@ class PushMessagingManager : public blink::mojom::PushMessaging {
   void SendSubscriptionError(RegisterData data,
                              blink::mojom::PushRegistrationStatus status);
   // Called both from "SW core" thread, and via PostTask from UI thread.
-  void SendSubscriptionSuccess(RegisterData data,
-                               blink::mojom::PushRegistrationStatus status,
-                               const GURL& endpoint,
-                               const std::vector<uint8_t>& p256dh,
-                               const std::vector<uint8_t>& auth);
+  void SendSubscriptionSuccess(
+      RegisterData data,
+      blink::mojom::PushRegistrationStatus status,
+      const GURL& endpoint,
+      const base::Optional<base::Time>& expiration_time,
+      const std::vector<uint8_t>& p256dh,
+      const std::vector<uint8_t>& auth);
 
   void UnsubscribeHavingGottenSenderId(
       UnsubscribeCallback callback,

content/shell/browser/web_test/web_test_push_messaging_service.cc

@@ -40,8 +40,11 @@ const uint8_t kAuthentication[] = {0xA5, 0xD9, 0x3C, 0x43, 0x0C, 0x00,
 static_assert(sizeof(kAuthentication) == 12,
               "The fake authentication key must be at least 12 bytes in size.");
 
+const int64_t kTestExpirationWindowInDays = 90;
+
 base::Time GetFutureTime() {
-  return base::Time::Now() + base::TimeDelta::FromDays(100);
+  return base::Time::Now() +
+         base::TimeDelta::FromDays(kTestExpirationWindowInDays);
 }
 
 }  // anonymous namespace

third_party/blink/web_tests/http/tests/push_messaging/push-subscription-stringification.html

@@ -3,6 +3,7 @@
 <head>
 <title>Stringifying a PushSubscription object includes all object members</title>
 <link rel="manifest" href="resources/push_manifest.json">
+<script src="resources/push-constants.js"></script>
 <script src="../resources/testharness.js"></script>
 <script src="../resources/testharnessreport.js"></script>
 <script src="../serviceworker/resources/test-helpers.js"></script>
@@ -36,9 +37,12 @@ async_test(function(test) {
             assert_own_property(reflectedObject, 'endpoint');
             assert_equals(reflectedObject.endpoint, pushSubscription.endpoint);
 
+            // Expiration time should be in the expected window
             assert_own_property(reflectedObject, 'expirationTime');
-            assert_equals(reflectedObject.expirationTime, null);
-
+            assert_true(typeof pushSubscription.expirationTime === 'number');
+            assert_approx_equals(pushSubscription.expirationTime, Date.now() +
+                                 EXPIRATION_WINDOW, EXPIRATION_TIME_TOLERANCE,
+                                 `Expiration time should be in expected window: ${EXPIRATION_TIME_TOLERANCE} ms`);
             assert_own_property(reflectedObject, 'keys');
             assert_own_property(reflectedObject.keys, 'p256dh');
             assert_own_property(reflectedObject.keys, 'auth');

third_party/blink/web_tests/http/tests/push_messaging/resources/push-constants.js

@@ -17,4 +17,8 @@ const VALID_BASE64URL_ENCODED_KEY = "BFVSaqVujqpHlzYQwWY8HmW_oXvuSMnGu78CGFNyHQx
 
 const INVALID_BASE64URL_ENCODED_KEY = "BJEOX8aRBRLJ1SitNXbDH9Lc5CCIsTE33YwGakcXvoQ5K7KZq13-jxB2vhMTcX9c4-tC0h6CIFifzJhH6cNS!!!"
 
-const INVALID_BASE64_ENCODED_KEY = "BJEOX8aRBRLJ1SitNXbDH9Lc5CCIsTE33YwGakcXvoQ5K7KZq13+jxB2vhMTcX9c4+tC0h6CIFifzJhH6cNS/wQ="
+const INVALID_BASE64_ENCODED_KEY = "BJEOX8aRBRLJ1SitNXbDH9Lc5CCIsTE33YwGakcXvoQ5K7KZq13+jxB2vhMTcX9c4+tC0h6CIFifzJhH6cNS/wQ="
\ No newline at end of file
+
+const EXPIRATION_WINDOW = 90 * 24 * 60 * 60 * 1000;
+
+const EXPIRATION_TIME_TOLERANCE = 24 * 60 * 60 * 1000;

third_party/blink/web_tests/http/tests/push_messaging/subscribe-success-in-document.html

@@ -3,6 +3,7 @@
 <head>
 <title>subscribe() succeeds when permission is granted and resolves with a valid subscription</title>
 <link rel="manifest" href="resources/push_manifest.json">
+<script src="resources/push-constants.js"></script>
 <script src="../resources/testharness.js"></script>
 <script src="../resources/testharnessreport.js"></script>
 <script src="../serviceworker/resources/test-helpers.js"></script>
@@ -31,11 +32,12 @@ async_test(function(test) {
             assert_idl_attribute(pushSubscription, 'endpoint');
             assert_equals(typeof pushSubscription.endpoint, 'string');
 
+            // Expiration time should be in the expected window
             assert_idl_attribute(pushSubscription, 'expirationTime');
-            // TODO(viviy): check for not null after passing expiration time in
-            // PushMessagingManager
-            assert_equals(pushSubscription.expirationTime, null);
-
+            assert_true(typeof pushSubscription.expirationTime === 'number');
+            assert_approx_equals(pushSubscription.expirationTime, Date.now() +
+                                 EXPIRATION_WINDOW, EXPIRATION_TIME_TOLERANCE,
+                                 `Expiration time should be in expected window: ${EXPIRATION_TIME_TOLERANCE} ms`);
             try {
                 var endpointUrl = new URL(pushSubscription.endpoint);
             } catch(e) {