[Android] Fix a flicker in stopping Chrome

content/public/android/java/src/org/chromium/content/browser/ContentViewRenderView.java

Index: content/public/android/java/src/org/chromium/content/browser/ContentViewRenderView.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/ContentViewRenderView.java b/content/public/android/java/src/org/chromium/content/browser/ContentViewRenderView.java
index a3093989bc9aee50284d64adfc8379434f8d4896..44638495236d0941d90a74b3193b432e914d76a3 100644
--- a/content/public/android/java/src/org/chromium/content/browser/ContentViewRenderView.java
+++ b/content/public/android/java/src/org/chromium/content/browser/ContentViewRenderView.java
@@ -10,6 +10,7 @@ import android.graphics.PixelFormat;
 import android.view.Surface;
 import android.view.SurfaceHolder;
 import android.view.SurfaceView;
+import android.view.View;
 import android.widget.FrameLayout;
 
 import org.chromium.base.CalledByNative;
@@ -156,6 +157,18 @@ public class ContentViewRenderView extends FrameLayout {
         nativeSetNeedsComposite(mNativeContentViewRenderView);
     }
 
+    boolean mWindowShown;

[David Trainor- moved to gerrit, 2015/01/15 01:16:07]

private, move to top of file with other variables.

[Changwan Ryu, 2015/01/15 01:51:34]

Removed.

+
+    @Override
+    protected void onWindowVisibilityChanged(int visibility) {
+        boolean windowShown = visibility == View.VISIBLE;

[David Trainor- moved to gerrit, 2015/01/15 01:16:07]

See earlier comment in TabManager.

[Changwan Ryu, 2015/01/15 01:51:34]

Done.

+        if (windowShown != mWindowShown) {
+            if (!windowShown) onWindowHidden();
+            mWindowShown = windowShown;
+        }
+        super.onWindowVisibilityChanged(visibility);
+    }
+
     /**
      * This method should be subclassed to provide actions to be performed once the view is ready to
      * render.
@@ -164,6 +177,13 @@ public class ContentViewRenderView extends FrameLayout {
     }
 
     /**
+     * This method should be subclassed to provide actions to be performed once the window is
+     * hidden.
+     */
+    protected void onWindowHidden() {
+    }
+
+    /**
      * This method could be subclassed optionally to provide a custom SurfaceView object to
      * this ContentViewRenderView.
      * @param context The context used to create the SurfaceView object.