2 files changed, 10 insertions, 0 deletions
diff --git a/content/shell/renderer/test_runner/WebTestProxy.cpp b/content/shell/renderer/test_runner/WebTestProxy.cpp
index 70bb6b7..99069ba 100644
--- a/content/shell/renderer/test_runner/WebTestProxy.cpp
+++ b/content/shell/renderer/test_runner/WebTestProxy.cpp
@@ -738,6 +738,11 @@ void WebTestProxyBase::animateNow()
     }
 }
 
+bool WebTestProxyBase::isCompositorFramePending() const
+{
+    return m_animateScheduled || !m_paintRect.isEmpty();
+}
+
 void WebTestProxyBase::show(WebNavigationPolicy)
 {
     invalidateAll();
diff --git a/content/shell/renderer/test_runner/WebTestProxy.h b/content/shell/renderer/test_runner/WebTestProxy.h
index a5680c5..111cb101 100644
--- a/content/shell/renderer/test_runner/WebTestProxy.h
+++ b/content/shell/renderer/test_runner/WebTestProxy.h
@@ -134,6 +134,7 @@ protected:
     void didInvalidateRect(const blink::WebRect&);
     void didScrollRect(int, int, const blink::WebRect&);
     void scheduleAnimation();
+    bool isCompositorFramePending() const;
     // FIXME: Remove once we switch to use didForceResize.
     void setWindowRect(const blink::WebRect&);
     void show(blink::WebNavigationPolicy);
@@ -258,6 +259,10 @@ public:
     {
         WebTestProxyBase::scheduleAnimation();
     }
+    virtual bool isCompositorFramePending() const
+    {
+        return WebTestProxyBase::isCompositorFramePending();
+    }
     virtual void setWindowRect(const blink::WebRect& rect)
     {
         WebTestProxyBase::setWindowRect(rect);