Reland of Update NTP to new material design spec.

chrome/android/java/src/org/chromium/chrome/browser/ntp/NewTabPageScrollView.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.annotation.SuppressLint;
 import android.content.Context;
 import android.graphics.Canvas;
 import android.os.Build;
@@ skipping 41 matching lines @@
 
         mGestureDetector = new GestureDetector(
                 getContext(), new GestureDetector.SimpleOnGestureListener() {
                     @Override
                     public boolean onSingleTapUp(MotionEvent e) {
                         boolean retVal = super.onSingleTapUp(e);
                         requestFocus();
                         return retVal;
                     }
                 });
+        setBackgroundColor(NtpColorUtils.getBackgroundColorResource(getResources()));
     }
 
     /**
      * Enables drawing a shadow at the bottom of the view when the view's content extends beyond
      * the bottom of the view. This is exactly the same as a fading edge, except that the shadow
      * color can have an alpha component, whereas a fading edge color must be opaque.
      *
      * @param shadowColor The color of the shadow, e.g. 0x11000000.
      */
     public void enableBottomShadow(int shadowColor) {
@@ skipping 81 matching lines @@
         if (mFadingShadow != null) {
             setVerticalFadingEdgeEnabled(true);
             float shadowStrength = getBottomFadingEdgeStrength();
             float shadowHeight = getVerticalFadingEdgeLength();
             setVerticalFadingEdgeEnabled(false);
             mFadingShadow.drawShadow(this, canvas, FadingShadow.POSITION_BOTTOM,
                     shadowHeight, shadowStrength);
         }
     }
 }