[Update Notification Service]: Launch Chrome flow.

- Implemented the flow when user clicked notification and launch Chrome
Activity from background.

Bug: 1013685
Change-Id: Ib9e96da59358fcc9f4016cf8a5ebcfe3ec043dc4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1994240
Commit-Queue: Hesen Zhang <hesen@chromium.org>
Auto-Submit: Hesen Zhang <hesen@chromium.org>
Reviewed-by: Xing Liu <xingliu@chromium.org>
Reviewed-by: David Trainor <dtrainor@chromium.org>
Cr-Commit-Position: refs/heads/master@{#732990}

chrome/android/java/src/org/chromium/chrome/browser/omaha/notification/UpdateNotificationServiceBridge.java

@@ -16,6 +16,8 @@ import android.content.SharedPreferences;
 import androidx.annotation.Nullable;
 
 import org.chromium.base.Callback;
+import org.chromium.base.ContextUtils;
+import org.chromium.base.Log;
 import org.chromium.base.annotations.CalledByNative;
 import org.chromium.base.annotations.JNINamespace;
 import org.chromium.base.annotations.NativeMethods;
@@ -44,6 +46,7 @@ public class UpdateNotificationServiceBridge implements UpdateNotificationContro
 
     private ChromeActivity mActivity;
     private @Nullable UpdateStatusProvider.UpdateStatus mUpdateStatus;
+    private static final String TAG = "cr_UpdateNotif";
 
     /**
      * @param activity A {@link ChromeActivity} instance the notification will be shown in.
@@ -147,4 +150,15 @@ public class UpdateNotificationServiceBridge implements UpdateNotificationContro
         editor.putInt(PREF_UPDATE_NOTIFICATION_USER_DISMISS_COUNT_KEY, count);
         editor.apply();
     }
+
+    @CalledByNative
+    private static void launchChromeActivity() {
+        // TODO(hesen): Record metrics.
+        try {
+            // TODO(hesen): Handle the INLINE_UPDATE_AVAILABLE state.
+            UpdateUtils.onUpdateAvailable(ContextUtils.getApplicationContext(), UPDATE_AVAILABLE);
+        } catch (IllegalArgumentException e) {
+            Log.e(TAG, "Failed to start activity in background.", e);
+        }
+    }
 }

chrome/browser/updates/update_notification_client.cc

@@ -44,7 +44,7 @@ void UpdateNotificationClient::OnUserAction(const UserActionData& action_data) {
 
   switch (action_data.action_type) {
     case notifications::UserActionType::kClick:
-      NOTIMPLEMENTED();
+      update_notification_service->OnUserClick();
       break;
     case notifications::UserActionType::kButtonClick:
       NOTIMPLEMENTED();

chrome/browser/updates/update_notification_service.h

@@ -27,6 +27,9 @@ class UpdateNotificationService : public KeyedService {
   // Called when the notification is dismissed by user.
   virtual void OnUserDismiss() = 0;
 
+  // Called when the notification is clicked by user.
+  virtual void OnUserClick() = 0;
+
   ~UpdateNotificationService() override = default;
 
  protected:

chrome/browser/updates/update_notification_service_bridge.cc

@@ -80,4 +80,8 @@ int GetUserDismissCount() {
   return Java_UpdateNotificationServiceBridge_getUserDismissCount(env);
 }
 
+void LaunchChromeActivity() {
+  JNIEnv* env = base::android::AttachCurrentThread();
+  Java_UpdateNotificationServiceBridge_launchChromeActivity(env);
+}
 }  // namespace updates

chrome/browser/updates/update_notification_service_bridge.h

@@ -32,6 +32,9 @@ void UpdateUserDismissCount(int count);
 // Returns persisted count from Android SharedPreferences.
 int GetUserDismissCount();
 
+// Launches Chrome activity after user clicked the notification.
+void LaunchChromeActivity();
+
 }  // namespace updates
 
 #endif  // CHROME_BROWSER_UPDATES_UPDATE_NOTIFICATION_SERVICE_BRIDGE_H_

chrome/browser/updates/update_notification_service_impl.cc

@@ -124,4 +124,8 @@ void UpdateNotificationServiceImpl::ApplyLinearThrottle() {
   updates::UpdateThrottleInterval(scale * interval + offset);
 }
 
+void UpdateNotificationServiceImpl::OnUserClick() {
+  updates::LaunchChromeActivity();
+}
+
 }  // namespace updates

chrome/browser/updates/update_notification_service_impl.h

@@ -31,10 +31,9 @@ class UpdateNotificationServiceImpl : public UpdateNotificationService {
  private:
   // UpdateNotificationService implementation.
   void Schedule(UpdateNotificationInfo data) override;
-
   bool IsReadyToDisplay() const override;
-
   void OnUserDismiss() override;
+  void OnUserClick() override;
 
   // Called after querying the |ClientOverview| struct from scheduler system
   // completed.