Implement renderer importance API for WebView

android_webview/glue/java/src/com/android/webview/chromium/WebViewChromium.java

 // Copyright 2014 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 com.android.webview.chromium;
 
 import android.annotation.SuppressLint;
 import android.annotation.TargetApi;
 import android.content.Context;
 import android.content.Intent;
@@ skipping 75 matching lines @@
     // Lets us access protected View-derived methods on the WebView instance we're backing.
     WebView.PrivateAccess mWebViewPrivate;
     // The client adapter class.
     private WebViewContentsClientAdapter mContentsClientAdapter;
     // The wrapped Context.
     private Context mContext;
 
     // Variables for functionality provided by this adapter ---------------------------------------
     private ContentSettingsAdapter mWebSettings;
     // The WebView wrapper for ContentViewCore and required browser compontents.
-    private AwContents mAwContents;
+    AwContents mAwContents;
     // Non-null if this webview is using the GL accelerated draw path.
     private DrawGLFunctor mGLfunctor;
 
     private final WebView.HitTestResult mHitTestResult;
 
     private final int mAppTargetSdkVersion;
 
     private WebViewChromiumFactoryProvider mFactory;
 
     private final boolean mShouldDisableThreadChecking;
@@ skipping 2166 matching lines @@
         mAwContents.extractSmartClipData(x, y, width, height);
     }
 
     // Implements SmartClipProvider
     @Override
     public void setSmartClipResultHandler(final Handler resultHandler) {
         checkThread();
         mAwContents.setSmartClipResultHandler(resultHandler);
     }
 }