Revert of Update NTP to new material design spec.

chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPageToolbar.java

 // 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.
 
 package org.chromium.chrome.browser.ntp;
 
 import android.content.Context;
 import android.util.AttributeSet;
 import android.view.View;
 import android.view.ViewGroup;
@@ skipping 33 matching lines @@
 
     @Override
     protected void onFinishInflate() {
         super.onFinishInflate();
         mBookmarksButton = initButton(R.id.bookmarks_button, R.drawable.btn_star);
         mRecentTabsButton = initButton(R.id.recent_tabs_button, R.drawable.btn_recents);
         ((TextView) mBookmarksButton.getChildAt(0)).setText(R.string.ntp_bookmarks);
         ((TextView) mBookmarksButton.getChildAt(0)).setContentDescription(getResources().getString(
                 R.string.accessibility_ntp_toolbar_btn_bookmarks));
         mInterestsButton =  initButton(R.id.interests_button, R.drawable.btn_star_filled);
-
-        setBackgroundColor(NtpColorUtils.getBackgroundColorResource(getResources()));
     }
 
     private ViewGroup initButton(int buttonId, int drawableId) {
         ViewGroup button = (ViewGroup) findViewById(buttonId);
         TextView textView = (TextView) button.getChildAt(0);
 
         TintedDrawable icon = TintedDrawable.constructTintedDrawable(getResources(), drawableId);
         ApiCompatibilityUtils.setCompoundDrawablesRelativeWithIntrinsicBounds(
                 textView, icon, null, null, null);
 
         return button;
     }
 }