Enable the embedded L1/EME support in WebView.

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

Index: content/public/android/java/src/org/chromium/content/browser/ContentViewClient.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/ContentViewClient.java b/content/public/android/java/src/org/chromium/content/browser/ContentViewClient.java
index e2d6c05df91c76f783ad564b683914a813131b31..63b53492d60a35be488e969df24a5e37e3cba957 100644
--- a/content/public/android/java/src/org/chromium/content/browser/ContentViewClient.java
+++ b/content/public/android/java/src/org/chromium/content/browser/ContentViewClient.java
@@ -161,10 +161,8 @@ public class ContentViewClient {
         }
     }
 
-    public void onExternalVideoSurfaceRequested(int playerId) {
-    }
-
-    public void onGeometryChanged(int playerId, RectF rect) {
+    public void onExternalVideoSurfaceNotified(
+            ContentViewCore contentViewCore, int playerId, boolean isRequest, RectF rect) {

[boliu, 2014/01/24 21:56:32]

This is going in the wrong direction imo. If I understand this correctly, this
call is now serving 4 purposes:

1) Request a video surface (when isRequest is true)
2) Update the location of the video element in relation to the page (rect)
3) Update the scroll position/zoom of the page
4) Release the surface (when rect is empty)

Just split them into 4 calls, and properly document each one. Similar for the
generic "notifyExternalSurface" method. Then the code will be much more
understandable.

Sorry I didn't make that clear in the last round of review.

[ycheo (away), 2014/01/28 13:08:53]

Done.

[ycheo (away), 2014/01/28 13:23:13]

I splited the functions within the browser process.
As I checked the history, we've merged the function 1) and 2) to reduce the IPC.

     }
 
     public ContentVideoViewClient getContentVideoViewClient() {