[WebView] Fix issue with transparent background.

android_webview/java/src/org/chromium/android_webview/AwContents.java

 // Copyright 2012 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.android_webview;
 
 import android.annotation.SuppressLint;
 import android.app.Activity;
 import android.content.ComponentCallbacks2;
 import android.content.Context;
@@ skipping 633 matching lines @@
         FullScreenView fullScreenView = new FullScreenView(mContext, mAwViewMethods);
         mFullScreenTransitionsState.enterFullScreen(fullScreenView);
         mAwViewMethods = new NullAwViewMethods(this, mInternalAccessAdapter, mContainerView);
         mContainerView.removeOnLayoutChangeListener(mLayoutChangeListener);
         fullScreenView.addOnLayoutChangeListener(mLayoutChangeListener);
 
         // Associate this AwContents with the FullScreenView.
         setInternalAccessAdapter(fullScreenView.getInternalAccessAdapter());
         setContainerView(fullScreenView);
 
-        // Make the background transparent so that the ContentVideoView is visible
-        // behind the FullScreenView.
-        nativeSetHasTransparentBackground(mNativeAwContents, true);
         return fullScreenView;
     }
 
     /**
      * Returns this {@link AwContents} to embedded mode, where the {@link AwContents} are drawn
      * in the WebView.
      */
     void exitFullScreen() {
         assert isFullScreen();
 
@@ skipping 11 matching lines @@
                 this, fullscreenView.getInternalAccessAdapter(), fullscreenView));
         mAwViewMethods = awViewMethodsImpl;
         ViewGroup initialContainerView = mFullScreenTransitionsState.getInitialContainerView();
         initialContainerView.addOnLayoutChangeListener(mLayoutChangeListener);
         fullscreenView.removeOnLayoutChangeListener(mLayoutChangeListener);
 
         // Re-associate this AwContents with the WebView.
         setInternalAccessAdapter(mFullScreenTransitionsState.getInitialInternalAccessDelegate());
         setContainerView(initialContainerView);
 
-        nativeSetHasTransparentBackground(mNativeAwContents, false);
         mFullScreenTransitionsState.exitFullScreen();
     }
 
     private void setInternalAccessAdapter(InternalAccessDelegate internalAccessAdapter) {
         mInternalAccessAdapter = internalAccessAdapter;
         mContentViewCore.setContainerViewInternals(mInternalAccessAdapter);
     }
 
     private void setContainerView(ViewGroup newContainerView) {
         mContainerView = newContainerView;
@@ skipping 1743 matching lines @@
 
     // Returns null if save state fails.
     private native byte[] nativeGetOpaqueState(long nativeAwContents);
 
     // Returns false if restore state fails.
     private native boolean nativeRestoreFromOpaqueState(long nativeAwContents, byte[] state);
 
     private native long nativeReleasePopupAwContents(long nativeAwContents);
     private native void nativeFocusFirstNode(long nativeAwContents);
     private native void nativeSetBackgroundColor(long nativeAwContents, int color);
-    private native void nativeSetHasTransparentBackground(
-            long nativeAwContents, boolean transparent);
 
     private native long nativeGetAwDrawGLViewContext(long nativeAwContents);
     private native long nativeCapturePicture(long nativeAwContents, int width, int height);
     private native void nativeEnableOnNewPicture(long nativeAwContents, boolean enabled);
     private native void nativeClearView(long nativeAwContents);
     private native void nativeSetExtraHeadersForUrl(long nativeAwContents,
             String url, String extraHeaders);
 
     private native void nativeInvokeGeolocationCallback(
             long nativeAwContents, boolean value, String requestingFrame);
 
     private native void nativeSetJsOnlineProperty(long nativeAwContents, boolean networkUp);
 
     private native void nativeTrimMemory(long nativeAwContents, int level, boolean visible);
 
     private native void nativeCreatePdfExporter(long nativeAwContents, AwPdfExporter awPdfExporter);
 
     private native void nativePreauthorizePermission(long nativeAwContents, String origin,
             long resources);
 }