Add CCDelegatingRenderer, and corresponding IPCs

cc/CCLayerTreeHostImpl.cpp

Index: cc/CCLayerTreeHostImpl.cpp
diff --git a/cc/CCLayerTreeHostImpl.cpp b/cc/CCLayerTreeHostImpl.cpp
index 0c414cff25fde7bdcfee10135c677ff623e3ba14..35478ccc2d232e8b863d6ab88cdec8432dfea607 100644
--- a/cc/CCLayerTreeHostImpl.cpp
+++ b/cc/CCLayerTreeHostImpl.cpp
@@ -10,6 +10,7 @@
 #include "CCDamageTracker.h"
 #include "CCDebugRectHistory.h"
 #include "CCDelayBasedTimeSource.h"
+#include "CCDelegatingRenderer.h"
 #include "CCFontAtlas.h"
 #include "CCFrameRateCounter.h"
 #include "CCHeadsUpDisplayLayerImpl.h"
@@ -521,6 +522,12 @@ void CCLayerTreeHostImpl::onVSyncParametersChanged(double monotonicTimebase, dou
     m_client->onVSyncParametersChanged(monotonicTimebase, intervalInSeconds);
 }
 
+void CCLayerTreeHostImpl::onSendFrameToParentCompositorAck(const WebKit::WebCompositorFrameAck& ack)
+{
+    if (m_renderer)
+        m_renderer->onSendFrameToParentCompositorAck(ack);
+}
+
 void CCLayerTreeHostImpl::drawLayers(const FrameData& frame)
 {
     TRACE_EVENT0("cc", "CCLayerTreeHostImpl::drawLayers");
@@ -688,9 +695,13 @@ bool CCLayerTreeHostImpl::initializeRenderer(PassOwnPtr<CCGraphicsContext> conte
 
     OwnPtr<CCGraphicsContext> contextRef(context);
     OwnPtr<CCResourceProvider> resourceProvider = CCResourceProvider::create(contextRef.get(), textureUploader);
-    OwnPtr<CCRendererGL> renderer;
-    if (resourceProvider.get())
-        renderer = CCRendererGL::create(this, resourceProvider.get());
+    OwnPtr<CCRenderer> renderer;
+    if (resourceProvider.get()) {
+        if (contextRef->capabilities().hasParentCompositor)
+            renderer = CCDelegatingRenderer::create(this, resourceProvider.get());
+        else
+            renderer = CCRendererGL::create(this, resourceProvider.get());

[danakj, 2012/09/21 20:51:41]

We've become inconsistent in our naming of renderers now. Are we going to use
PrefixRenderer or RendererSuffix?

+    }
 
     // Since we now have a new context/renderer, we cannot continue to use the old
     // resources (i.e. renderSurfaces and texture IDs).