Add progressbar to animated doodle

chrome/android/java/res/layout/eb_main_content.xml

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright 2015 The Chromium Authors. All rights reserved.
      Use of this source code is governed by a BSD-style license that can be
      found in the LICENSE file. -->
 
 <org.chromium.chrome.browser.enhancedbookmarks.EnhancedBookmarkContentView
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:id="@+id/eb_content_view"
     android:layout_width="match_parent"
     android:layout_height="match_parent" >
@@ skipping 17 matching lines @@
         android:layout_height="wrap_content"
         android:layout_centerInParent="true"
         android:drawablePadding="3dp"
         android:drawableTop="@drawable/eb_logo_large"
         android:gravity="center"
         android:padding="16dp"
         android:textColor="#5B5B5B"
         android:textSize="16sp"
         android:visibility="gone" />
 
-    <org.chromium.chrome.browser.enhancedbookmarks.EnhancedBookmarkLoadingView
+    <org.chromium.chrome.browser.widget.LoadingView
         android:id="@+id/eb_initial_loading_view"
-        android:layout_width="match_parent"
-        android:layout_height="match_parent"
-        android:background="#f2f2f2"
-        android:visibility="gone" >
-
-        <ProgressBar
-            android:id="@+id/eb_loading_circle"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_gravity="center"
-            android:layout_centerInParent="true"
-            android:visibility="gone" />
-    </org.chromium.chrome.browser.enhancedbookmarks.EnhancedBookmarkLoadingView>
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_centerInParent="true"
+        android:visibility="gone" />
 
     <org.chromium.chrome.browser.enhancedbookmarks.EnhancedBookmarkActionBar
         android:id="@id/eb_action_bar"
         android:layout_width="match_parent"
         android:layout_height="?attr/actionBarSize"
-        android:layout_alignParentTop="true" >
+        android:layout_alignParentTop="true"
+        android:background="@color/enhanced_bookmark_appbar_background" >
 
         <org.chromium.chrome.browser.widget.NumberRollView
             android:id="@+id/selection_mode_number"
             android:layout_width="wrap_content"
             android:layout_height="match_parent"
             android:visibility="gone" >
 
             <TextView
                 android:id="@+id/up"
                 android:layout_width="wrap_content"
@@ skipping 13 matching lines @@
                 android:textSize="20sp" />
         </org.chromium.chrome.browser.widget.NumberRollView>
     </org.chromium.chrome.browser.enhancedbookmarks.EnhancedBookmarkActionBar>
 
     <org.chromium.chrome.browser.widget.FadingShadowView
         android:id="@+id/shadow"
         android:layout_width="match_parent"
         android:layout_height="10dp"
         android:layout_below="@id/eb_action_bar" />
 </org.chromium.chrome.browser.enhancedbookmarks.EnhancedBookmarkContentView>