aw: Use functor callback for lifetime management

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.app.assist.AssistStructure.ViewNode;
 import android.content.Context;
@@ skipping 2230 matching lines @@
 
     @Override
     public PrintDocumentAdapter createPrintDocumentAdapter(String documentName) {
         checkThread();
         return new AwPrintDocumentAdapter(mAwContents.getPdfExporter(), documentName);
     }
 
     // AwContents.NativeGLDelegate implementation --------------------------------------
     private class WebViewNativeGLDelegate implements AwContents.NativeGLDelegate {
         @Override
-        public boolean setDrawGLFunctionDetachedCallback(View view, Runnable callback) {
-            return false; // Not supported yet.
+        public boolean supportsDrawGLFunctorReleasedCallback() {
+            return DrawGLFunctor.supportsDrawGLFunctorReleasedCallback();
         }
 
         @Override
-        public boolean requestDrawGL(Canvas canvas, boolean waitForCompletion, View containerView) {
+        public boolean requestDrawGL(Canvas canvas, boolean waitForCompletion, View containerView,
+                Runnable releasedCallback) {
             if (mGLfunctor == null) {
                 mGLfunctor = new DrawGLFunctor(
                         mAwContents.getAwDrawGLViewContext(), mFactory.getWebViewDelegate());
             }
-            return mGLfunctor.requestDrawGL(canvas, containerView, waitForCompletion);
+            return mGLfunctor.requestDrawGL(
+                    canvas, containerView, waitForCompletion, releasedCallback);
         }
 
         @Override
         public void detachGLFunctor() {
             if (mGLfunctor != null) {
                 mGLfunctor.detach();
             }
         }
     }
 
@@ skipping 92 matching lines @@
         mAwContents.extractSmartClipData(x, y, width, height);
     }
 
     // Implements SmartClipProvider
     @Override
     public void setSmartClipResultHandler(final Handler resultHandler) {
         checkThread();
         mAwContents.setSmartClipResultHandler(resultHandler);
     }
 }