Make ContentVideoView progress view visible in WebView

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

Index: content/public/android/java/src/org/chromium/content/browser/ContentVideoViewEmbedder.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/ContentVideoViewEmbedder.java b/content/public/android/java/src/org/chromium/content/browser/ContentVideoViewEmbedder.java
index 198a5a2bb18ed9c744e5b1257fac6adbb8823a6a..fadbe5b5fc43ab2e65a33cbcaf026e33ad80d8f4 100644
--- a/content/public/android/java/src/org/chromium/content/browser/ContentVideoViewEmbedder.java
+++ b/content/public/android/java/src/org/chromium/content/browser/ContentVideoViewEmbedder.java
@@ -23,20 +23,21 @@ public interface ContentVideoViewEmbedder {
      * Called when the {@link ContentVideoView}, which contains the fullscreen video,
      * is ready to be shown. Must be implemented.
      * @param view The view containing the fullscreen video that embedders must show.
+     * @param isVideoLoaded The flag telling whether video has already been loaded.
+     *                      When it is false, embedder might show the progress view.
      */
-    public void enterFullscreenVideo(View view);
+    public void enterFullscreenVideo(View view, boolean isVideoLoaded);
 
     /**
-     * Called to exit fullscreen video. Embedders must stop showing the view given in
-     * {@link #enterFullscreenVideo(View)}. Must be implemented.
+     * Tells the embedder to remove the progress view.
      */
-    public void exitFullscreenVideo();
+    public void fullscreenVideoLoaded();
 
     /**
-     * Allows the embedder to replace the view indicating that the video is loading.
-     * If null is returned, the default video loading view is used.
+     * Called to exit fullscreen video. Embedders must stop showing the view given in
+     * {@link #enterFullscreenVideo(View)}. Must be implemented.
      */
-    public View getVideoLoadingProgressView();
+    public void exitFullscreenVideo();
 
     /**
      * Sets the system ui visibility after entering or exiting fullscreen.