Enable new scenarios for user activity hints

Add user activity hints to new UI scenarios:
browser brought to foreground, tab navigation view and
URL bar gets focus.

Change-Id: I3df26455be424f8bdf3c8e6a1d8fa53ca5602695
diff --git a/src/com/android/browser/BrowserBookmarksPage.java b/src/com/android/browser/BrowserBookmarksPage.java
index 80ff6d8..05bd248 100644
--- a/src/com/android/browser/BrowserBookmarksPage.java
+++ b/src/com/android/browser/BrowserBookmarksPage.java
@@ -564,8 +564,10 @@
         LoaderManager lm = getLoaderManager();
         lm.restartLoader(LOADER_ACCOUNTS, null, this);
 
-        //Notify about anticipated network activity
-        NetworkServices.HintUpcomingUserActivity();
+        if (!BrowserSettings.getInstance().isPowerSaveModeEnabled()) {
+            //Notify about anticipated network activity
+            NetworkServices.hintUpcomingUserActivity();
+        }
 
         EditBookmarksRestriction.getInstance().registerView(mGrid);