Update NTP to new material design spec.

chrome/android/java/src/org/chromium/chrome/browser/signin/AccountSigninView.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.signin;
 
 import android.app.FragmentManager;
 import android.content.Context;
 import android.graphics.Bitmap;
 import android.text.TextUtils;
 import android.text.method.LinkMovementMethod;
 import android.util.AttributeSet;
 import android.view.View;
 import android.widget.Button;
 import android.widget.FrameLayout;
 import android.widget.ImageView;
 import android.widget.TextView;
 
 import org.chromium.base.ApiCompatibilityUtils;
 import org.chromium.base.metrics.RecordUserAction;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.firstrun.ProfileDataCache;
+import org.chromium.chrome.browser.ntp.NtpColorUtils;
 import org.chromium.chrome.browser.preferences.PrefServiceBridge;
 import org.chromium.chrome.browser.profiles.ProfileDownloader;
 import org.chromium.chrome.browser.signin.AccountTrackerService.OnSystemAccountsSeededListener;
 import org.chromium.chrome.browser.sync.SyncUserDataWiper;
 import org.chromium.chrome.browser.sync.ui.ConfirmImportSyncDataDialog;
 import org.chromium.chrome.browser.sync.ui.ConfirmImportSyncDataDialog.ImportSyncType;
 import org.chromium.signin.InvestigatedScenario;
 import org.chromium.sync.signin.AccountManagerHelper;
 import org.chromium.ui.text.NoUnderlineClickableSpan;
 import org.chromium.ui.text.SpanApplier;
@@ skipping 153 matching lines @@
             }
         }
     }
 
     /**
      * Changes the visuals slightly for when this view appears in the recent tabs page instead of
      * in first run.
      * This is currently used in the Recent Tabs Promo and the bookmarks page.
      */
     public void configureForRecentTabsOrBookmarksPage() {
-        setBackgroundResource(R.color.ntp_bg);
+        setBackgroundColor(NtpColorUtils.getBackgroundColorResource(getResources()));
         mCancelButtonTextId = R.string.cancel;
         setUpCancelButton();
     }
 
     /**
      * Enable or disable UI elements so the user can't select an account, cancel, etc.
      *
      * @param enabled The state to change to.
      */
     public void setButtonsEnabled(boolean enabled) {
@@ skipping 321 matching lines @@
         mPositiveButton.setTextColor(
                 ApiCompatibilityUtils.getColor(getResources(), R.color.fre_text_color));
         mPositiveButton.setAlpha(0.26f);
         mPositiveButton.setEnabled(false);
     }
 
     private String getSelectedAccountName() {
         return mAccountNames.get(mSigninChooseView.getSelectedAccountPosition());
     }
 }