Notify Java side to start when transition into full screen mode without a reload.

When video start in inline mode, and then transition into full screen mode, the
video is still playing, so we need to notify the player, such that the controller
can get the state correctly.

bug:6675847

Change-Id: Ib5f712ca91fe1c374dcc20de996dac6ff7b9e983
diff --git a/core/java/android/webkit/HTML5VideoViewProxy.java b/core/java/android/webkit/HTML5VideoViewProxy.java
index 90db308..ab884df 100644
--- a/core/java/android/webkit/HTML5VideoViewProxy.java
+++ b/core/java/android/webkit/HTML5VideoViewProxy.java
@@ -147,6 +147,7 @@
                 // Save the inline video info and inherit it in the full screen
                 int savePosition = 0;
                 boolean canSkipPrepare = false;
+                boolean forceStart = false;
                 if (mHTML5VideoView != null) {
                     // We don't allow enter full screen mode while the previous
                     // full screen video hasn't finished yet.
@@ -154,11 +155,11 @@
                         Log.w(LOGTAG, "Try to reenter the full screen mode");
                         return;
                     }
+                    int playerState = mHTML5VideoView.getCurrentState();
                     // If we are playing the same video, then it is better to
                     // save the current position.
                     if (layerId == mHTML5VideoView.getVideoLayerId()) {
                         savePosition = mHTML5VideoView.getCurrentPosition();
-                        int playerState = mHTML5VideoView.getCurrentState();
                         canSkipPrepare = (playerState == HTML5VideoView.STATE_PREPARING
                                 || playerState == HTML5VideoView.STATE_PREPARED
                                 || playerState == HTML5VideoView.STATE_PLAYING)
@@ -166,10 +167,14 @@
                     }
                     if (!canSkipPrepare) {
                         mHTML5VideoView.reset();
+                    } else {
+                        forceStart = playerState == HTML5VideoView.STATE_PREPARING
+                                || playerState == HTML5VideoView.STATE_PLAYING;
                     }
                 }
                 mHTML5VideoView = new HTML5VideoFullScreen(proxy.getContext(),
                         layerId, savePosition, canSkipPrepare);
+                mHTML5VideoView.setStartWhenPrepared(forceStart);
                 mCurrentProxy = proxy;
                 mHTML5VideoView.setVideoURI(url, mCurrentProxy);
                 mHTML5VideoView.enterFullScreenVideoState(layerId, proxy, webView);