Make ContentVideoView progress view visible in WebView

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

Index: android_webview/java/src/org/chromium/android_webview/AwContents.java
diff --git a/android_webview/java/src/org/chromium/android_webview/AwContents.java b/android_webview/java/src/org/chromium/android_webview/AwContents.java
index 65d815924c7e950517e8fcde222ed5a0bdff2aad..38659ef2bc5b9d31c88db74268f9289c7c28a56c 100644
--- a/android_webview/java/src/org/chromium/android_webview/AwContents.java
+++ b/android_webview/java/src/org/chromium/android_webview/AwContents.java
@@ -1264,6 +1264,10 @@ public class AwContents implements SmartClipProvider,
         nativeSetShouldDownloadFavicons();
     }
 
+    public static boolean isUnifiedMediaPipelineEnabled() {

[boliu, 2016/07/22 22:57:31]

going through AwContents makes no sense here

can some java class from media/base/android expose this method instead?

[Tima Vaisburd, 2016/07/23 00:07:27]

Thank you, will do. 

[Tima Vaisburd, 2016/07/23 03:50:58]

Hm, I could not find a good place in media/base/android either. Now put it in
MediaCodecUtils. Shall I create a new Java class, e.g. MediaInfo?
Chris, Frank, WDYT?

[liberato (no reviews please), 2016/07/25 15:43:28]

i think that MediaCodecUtils is fine.  if we don't have any more methods similar
to this in the future, then there's no problem.  otherwise, we can pull them out
into a separate class then, when it's clearer what their common theme is.

+        return nativeIsUnifiedMediaPipelineEnabled();
+    }
+
     public static Activity activityFromContext(Context context) {
         return WindowAndroid.activityFromContext(context);
     }
@@ -3281,6 +3285,7 @@ public class AwContents implements SmartClipProvider,
     private static native int nativeGetNativeInstanceCount();
     private static native void nativeSetShouldDownloadFavicons();
     private static native void nativeSetLocale(String locale);
+    private static native boolean nativeIsUnifiedMediaPipelineEnabled();
 
     private native void nativeSetJavaPeers(long nativeAwContents, AwContents awContents,
             AwWebContentsDelegate webViewWebContentsDelegate,