[Android] Notify ContentViewCore about pending renderer frames

Notify ContentViewCore whenever the renderer has produced a new frame
which should be displayed by the browser compositor. The browser
compositor will use this information to decide whether to run
immediately or at the next vsync interval.


Review URL: https://chromiumcodereview.appspot.com/11416357

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@172983 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 12 insertions, 0 deletions

diff --git a/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java b/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
index 9dd1fe7..9ad2f95 100644
--- a/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
+++ b/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
@@ -773,6 +773,16 @@ public class ContentViewCore implements MotionEventDelegate {
                 false : nativeIsShowingInterstitialPage(mNativeContentViewCore);
     }
 
+    /**
+     * Indicate that the browser compositor has consumed a pending renderer frame.
+     *
+     * @return Whether there was a pending renderer frame.
+     */
+    public boolean consumePendingRendererFrame() {
+        return mNativeContentViewCore == 0 ?
+                false : nativeConsumePendingRendererFrame(mNativeContentViewCore);
+    }
+
     @CalledByNative
     public int getWidth() {
         return mViewportWidth;
@@ -2395,6 +2405,8 @@ public class ContentViewCore implements MotionEventDelegate {
             int nativeContentViewCoreImpl, String url, int nativeInterstitialPageDelegateAndroid);
     private native boolean nativeIsShowingInterstitialPage(int nativeContentViewCoreImpl);
 
+    private native boolean nativeConsumePendingRendererFrame(int nativeContentViewCoreImpl);
+
     private native boolean nativeIsIncognito(int nativeContentViewCoreImpl);
 
     // Returns true if the native side crashed so that java side can draw a sad tab.