Remove max width on new tab page layout.

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

 <?xml version="1.0" encoding="utf-8"?>
 <!-- Copyright 2016 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.ntp.NewTabPageLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:chrome="http://schemas.android.com/apk/res-auto"
     android:id="@+id/ntp_content"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:layout_gravity="center_horizontal"
     android:orientation="vertical"
     android:gravity="center"
     android:paddingTop="@dimen/toolbar_height_no_shadow"
-    android:visibility="gone"
-    chrome:maxWidth="692dp" >
+    android:visibility="gone" >
 
     <!-- Spacer. Note: this must have layout_weight="1" and the other spacers must have
          layout_weight="0". The NewTabPageLayout will redistribute the extra space between
          them. -->
     <View
         android:id="@+id/ntp_top_spacer"
         android:layout_width="0dp"
         android:layout_height="0dp"
         android:layout_weight="1"
         android:visibility="invisible" />
@@ skipping 86 matching lines @@
         android:layout_height="0dp"
         android:layout_weight="1"
         android:visibility="gone" />
 
     <View
         android:id="@+id/ntp_scroll_spacer"
         android:layout_width="match_parent"
         android:layout_height="0dp"
         android:visibility="gone" />
 </org.chromium.chrome.browser.ntp.NewTabPageLayout>