Remove call to FinishAllRendering when in force-compositing-mode.

https://bugs.webkit.org/show_bug.cgi?id=98111

It's not needed and makes the renderer synchronously wait for a glFinish
to happen in the gpu process.

Reviewed by James Robinson.

* src/WebViewImpl.cpp:
(WebKit::WebViewImpl::setIsAcceleratedCompositingActive):
(WebKit):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@130178 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Source/WebKit/chromium/ChangeLog

+2012-10-02  Vangelis Kokkevis  <vangelis@chromium.org>
+
+        Remove call to FinishAllRendering when in force-compositing-mode.
+        https://bugs.webkit.org/show_bug.cgi?id=98111
+
+        It's not needed and makes the renderer synchronously wait for a glFinish
+        to happen in the gpu process.
+
+        Reviewed by James Robinson.
+
+        * src/WebViewImpl.cpp:
+        (WebKit::WebViewImpl::setIsAcceleratedCompositingActive):
+        (WebKit):
+
 2012-09-29  Ilya Tikhonovsky  <loislo@chromium.org>
         Web Inspector: NMI make String* instrumentation non intrusive

Source/WebKit/chromium/src/WebViewImpl.cpp

@@ -3773,8 +3773,9 @@ void WebViewImpl::setIsAcceleratedCompositingActive(bool active)
     if (!active) {
         m_isAcceleratedCompositingActive = false;
         // We need to finish all GL rendering before sending didDeactivateCompositor() to prevent
-        // flickering when compositing turns off.
-        if (m_layerTreeView)
+        // flickering when compositing turns off. This is only necessary if we're not in
+        // force-compositing-mode.
+        if (m_layerTreeView && !page()->settings()->forceCompositingMode())
             m_layerTreeView->finishAllRendering();
         m_client->didDeactivateCompositor();
     } else if (m_layerTreeView) {