Update title shown in task switcher from Bookmarks to Saved pages

BUG=491352

Review URL: https://codereview.chromium.org/1336883004

Cr-Commit-Position: refs/heads/master@{#348750}

chrome/android/java/src/org/chromium/chrome/browser/enhancedbookmarks/EnhancedBookmarkActivity.java

@@ -9,6 +9,7 @@ import android.os.Bundle;
 import android.view.WindowManager;
 
 import org.chromium.chrome.R;
+import org.chromium.chrome.browser.offlinepages.OfflinePageBridge;
 import org.chromium.chrome.browser.snackbar.SnackbarManager;
 import org.chromium.chrome.browser.snackbar.SnackbarManager.SnackbarManageable;
 import org.chromium.components.bookmarks.BookmarkId;
@@ -35,7 +36,9 @@ public class EnhancedBookmarkActivity extends EnhancedBookmarkActivityBase imple
         mSnackbarManager = new SnackbarManager(getWindow());
         mBookmarkManager = new EnhancedBookmarkManager(this);
         setContentView(mBookmarkManager.getView());
-        EnhancedBookmarkUtils.setTaskDescriptionInDocumentMode(this, getString(R.string.bookmarks));
+        EnhancedBookmarkUtils.setTaskDescriptionInDocumentMode(this, getString(
+                OfflinePageBridge.isEnabled() ? R.string.offline_pages_saved_pages
+                        : R.string.bookmarks));
 
         // Hack to work around inferred theme false lint error: http://crbug.com/445633
         assert (R.layout.eb_main_content != 0);

chrome/android/java/strings/android_chrome_strings.grd

@@ -1886,6 +1886,9 @@ Just open Chrome on your computer, go to the menu, and select “Sign in to Chro
       <message name="IDS_OFFLINE_PAGES_PAGE_FAILED_TO_SAVE_STORAGE_NEAR_FULL" desc="Message shown after a page was saved as a bookmark, but an offline copy was not created due to storage problem.">
         Saved page not available offline. Storage almost full.
       </message>
+      <message name="IDS_OFFLINE_PAGES_SAVED_PAGES" desc="Title in recent tasks list for showing the list of web pages that have been saved.">
+        Saved pages
+      </message>
       <message name="IDS_OFFLINE_PAGES_STORAGE_SPACE_TITLE" desc="Title of the promo header for managing offline pages storage. [CHAR-LIMIT=32]">
         Storage space
       </message>