Update blocking page title.

This Cl ensures that the blocking page title is the same as
the previous page title if the previous page title has been set.

Bug: 1061626
Change-Id: Ia9f813323b09d42aa5c2c12b139aabadea589ba1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2142136
Commit-Queue: Yilkal Abe <yilkal@chromium.org>
Reviewed-by: Aga Wronska <agawronska@chromium.org>
Cr-Commit-Position: refs/heads/master@{#758540}

chrome/browser/chromeos/child_accounts/time_limits/web_time_limit_enforcer_browsertest.cc

@@ -17,6 +17,7 @@
 #include "chrome/browser/chromeos/child_accounts/time_limits/app_time_limits_whitelist_policy_test_utils.h"
 #include "chrome/browser/chromeos/child_accounts/time_limits/app_types.h"
 #include "chrome/browser/chromeos/child_accounts/time_limits/web_time_limit_enforcer.h"
+#include "chrome/browser/chromeos/child_accounts/time_limits/web_time_navigation_observer.h"
 #include "chrome/browser/chromeos/login/test/scoped_policy_update.h"
 #include "chrome/browser/chromeos/login/test/user_policy_mixin.h"
 #include "chrome/browser/chromeos/policy/user_policy_test_helper.h"
@@ -413,5 +414,27 @@ IN_PROC_BROWSER_TEST_F(WebTimeLimitEnforcerThrottleTest,
   EXPECT_TRUE(IsErrorPageBeingShownInWebContents(web_contents3));
 }
 
+IN_PROC_BROWSER_TEST_F(WebTimeLimitEnforcerThrottleTest, WebContentTitleSet) {
+  GURL url = embedded_test_server()->GetURL(kExampleHost,
+                                            "/supervised_user/simple.html");
+  NavigateParams params(browser(), url,
+                        ui::PageTransition::PAGE_TRANSITION_LINK);
+  // Navigates and waits for loading to finish.
+  ui_test_utils::NavigateToURL(&params);
+  auto* web_contents = params.navigated_or_inserted_contents;
+  auto* navigation_observer =
+      chromeos::app_time::WebTimeNavigationObserver::FromWebContents(
+          web_contents);
+  base::string16 title = web_contents->GetTitle();
+  EXPECT_EQ(title, navigation_observer->previous_title());
+
+  LoadFinishedWaiter waiter(web_contents, url);
+  BlockWeb();
+  waiter.Wait();
+
+  EXPECT_TRUE(IsErrorPageBeingShownInWebContents(web_contents));
+  EXPECT_EQ(web_contents->GetTitle(), title);
+}
+
 // TODO(yilkal): Add WhitelistedSchemeNotBlocked test for  chrome://settings
 // TODO(yilkal): Add test for blocked web contents without browser window.

chrome/browser/chromeos/child_accounts/time_limits/web_time_limit_error_page/web_time_limit_error_page.cc

@@ -5,7 +5,6 @@
 #include "chrome/browser/chromeos/child_accounts/time_limits/web_time_limit_error_page/web_time_limit_error_page.h"
 
 #include "base/strings/strcat.h"
-#include "base/strings/string16.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/string_piece_forward.h"
@@ -29,15 +28,22 @@ base::string16 GetTimeLimitMessage(base::TimeDelta time_limit) {
                                   /* cutoff */ 3, time_limit);
 }
 
-std::string GetWebTimeLimitErrorPage(base::string16 block_header,
+std::string GetWebTimeLimitErrorPage(
+    base::string16 block_header,
     base::string16 block_message,
     base::TimeDelta time_limit,
-                                     const std::string& app_locale) {
+    const std::string& app_locale,
+    const base::Optional<base::string16>& title) {
   base::DictionaryValue strings;
+
+  if (!title.has_value()) {
     strings.SetString("blockPageTitle",
                       l10n_util::GetStringFUTF16(
                           IDS_WEB_TIME_LIMIT_ERROR_PAGE_TITLE,
                           l10n_util::GetStringUTF16(IDS_SHORT_PRODUCT_NAME)));
+  } else {
+    strings.SetString("blockPageTitle", title.value());
+  }
 
   strings.SetString("blockPageHeader", block_header);
   strings.SetString(
@@ -58,7 +64,9 @@ std::string GetWebTimeLimitErrorPage(base::string16 block_header,
 
 }  // namespace
 
-std::string GetWebTimeLimitChromeErrorPage(const std::string& domain,
+std::string GetWebTimeLimitChromeErrorPage(
+    const std::string& domain,
+    const base::Optional<base::string16>& title,
     base::TimeDelta time_limit,
     const std::string& app_locale) {
   auto block_header = l10n_util::GetStringFUTF16(
@@ -69,20 +77,20 @@ std::string GetWebTimeLimitChromeErrorPage(const std::string& domain,
       l10n_util::GetStringUTF16(IDS_SHORT_PRODUCT_NAME));
 
   return GetWebTimeLimitErrorPage(block_header, block_message, time_limit,
-                                  app_locale);
+                                  app_locale, title);
 }
 
 std::string GetWebTimeLimitAppErrorPage(base::TimeDelta time_limit,
                                         const std::string& app_locale,
                                         const std::string& app_name) {
-  auto block_header =
-      l10n_util::GetStringFUTF16(IDS_WEB_TIME_LIMIT_ERROR_PAGE_APP_HEADER,
-                                 UTF8ToUTF16(base::StringPiece(app_name)));
+  auto block_header = l10n_util::GetStringFUTF16(
+      IDS_WEB_TIME_LIMIT_ERROR_PAGE_APP_HEADER,
+      base::UTF8ToUTF16(base::StringPiece(app_name)));
 
   auto block_message = l10n_util::GetStringFUTF16(
       IDS_WEB_TIME_LIMIT_ERROR_PAGE_APP_MESSAGE,
       l10n_util::GetStringUTF16(IDS_SHORT_PRODUCT_NAME));
 
   return GetWebTimeLimitErrorPage(block_header, block_message, time_limit,
-                                  app_locale);
+                                  app_locale, base::UTF8ToUTF16(app_name));
 }

chrome/browser/chromeos/child_accounts/time_limits/web_time_limit_error_page/web_time_limit_error_page.h

@@ -6,6 +6,8 @@
 #define CHROME_BROWSER_CHROMEOS_CHILD_ACCOUNTS_TIME_LIMITS_WEB_TIME_LIMIT_ERROR_PAGE_WEB_TIME_LIMIT_ERROR_PAGE_H_
 
 #include <string>
+#include "base/optional.h"
+#include "base/strings/string16.h"
 
 namespace base {
 
@@ -14,10 +16,15 @@ class TimeDelta;
 }  // namespace base
 
 // Generates the appropriate time limit error page for Chrome.
+// |domain| is the domain of the website that is being paused.
+// |title| title is the title of the webcontents before it got paused. If there
+// was no title set for the webcontents, the title will be "Chrome got paused".
 // |time_limit| is used to specify the amount of time the user can use Chrome
 // and PWAs the following day.
 // |app_locale| is used to specify the locale used by the browser.
-std::string GetWebTimeLimitChromeErrorPage(const std::string& domain,
+std::string GetWebTimeLimitChromeErrorPage(
+    const std::string& domain,
+    const base::Optional<base::string16>& title,
     base::TimeDelta time_limit,
     const std::string& app_locale);
 

chrome/browser/chromeos/child_accounts/time_limits/web_time_limit_navigation_throttle.cc

@@ -15,6 +15,7 @@
 #include "chrome/browser/chromeos/child_accounts/time_limits/app_types.h"
 #include "chrome/browser/chromeos/child_accounts/time_limits/web_time_limit_enforcer.h"
 #include "chrome/browser/chromeos/child_accounts/time_limits/web_time_limit_error_page/web_time_limit_error_page.h"
+#include "chrome/browser/chromeos/child_accounts/time_limits/web_time_navigation_observer.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_list.h"
@@ -179,9 +180,15 @@ ThrottleCheckResult WebTimeLimitNavigationThrottle::WillStartOrRedirectRequest(
     if (domain.empty())
       domain = url.has_host() ? url.host() : url.spec();
 
+    app_time::WebTimeNavigationObserver* observer =
+        app_time::WebTimeNavigationObserver::FromWebContents(web_contents);
+    const base::Optional<base::string16>& prev_title =
+        observer ? observer->previous_title() : base::nullopt;
+
     return NavigationThrottle::ThrottleCheckResult(
         CANCEL, net::ERR_BLOCKED_BY_CLIENT,
-        GetWebTimeLimitChromeErrorPage(domain, time_limit, app_locale));
+        GetWebTimeLimitChromeErrorPage(domain, prev_title, time_limit,
+                                       app_locale));
   }
 
   // Don't throttle windowed applications. We show a notification and close

chrome/browser/chromeos/child_accounts/time_limits/web_time_navigation_observer.cc

@@ -8,6 +8,7 @@
 #include "chrome/browser/chromeos/child_accounts/time_limits/app_time_controller.h"
 #include "chrome/browser/chromeos/child_accounts/time_limits/web_time_limit_enforcer.h"
 #include "chrome/browser/web_applications/components/web_app_tab_helper_base.h"
+#include "content/public/browser/navigation_entry.h"
 #include "content/public/browser/navigation_handle.h"
 #include "content/public/browser/web_contents.h"
 
@@ -72,6 +73,10 @@ void WebTimeNavigationObserver::WebContentsDestroyed() {
     listener.WebTimeNavigationObserverDestroyed(this);
 }
 
+void WebTimeNavigationObserver::TitleWasSet(content::NavigationEntry* entry) {
+  previous_title_ = web_contents()->GetTitle();
+}
+
 WebTimeNavigationObserver::WebTimeNavigationObserver(
     content::WebContents* web_contents)
     : content::WebContentsObserver(web_contents) {}

chrome/browser/chromeos/child_accounts/time_limits/web_time_navigation_observer.h

@@ -7,6 +7,7 @@
 
 #include "base/observer_list_types.h"
 #include "base/optional.h"
+#include "base/strings/string16.h"
 #include "base/time/time.h"
 #include "chrome/browser/chromeos/child_accounts/time_limits/app_types.h"
 #include "content/public/browser/web_contents_observer.h"
@@ -15,6 +16,7 @@
 namespace content {
 class WebContents;
 class NavigationHandle;
+class NavigationEntry;
 }  // namespace content
 
 class GURL;
@@ -63,11 +65,16 @@ class WebTimeNavigationObserver
   void DidFinishNavigation(
       content::NavigationHandle* navigation_handle) override;
   void WebContentsDestroyed() override;
+  void TitleWasSet(content::NavigationEntry* entry) override;
 
   const base::Optional<NavigationInfo>& last_navigation_info() const {
     return last_navigation_info_;
   }
 
+  const base::Optional<base::string16>& previous_title() const {
+    return previous_title_;
+  }
+
  private:
   friend class content::WebContentsUserData<WebTimeNavigationObserver>;
 
@@ -80,6 +87,8 @@ class WebTimeNavigationObserver
 
   base::Optional<NavigationInfo> last_navigation_info_ = base::nullopt;
 
+  base::Optional<base::string16> previous_title_;
+
   WEB_CONTENTS_USER_DATA_KEY_DECL();
 };