Disable partial swaps for webview guest renderer until we can figure out how to do that properly.

content/browser/renderer_host/render_widget_host_view_guest.cc

Index: content/browser/renderer_host/render_widget_host_view_guest.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_guest.cc b/content/browser/renderer_host/render_widget_host_view_guest.cc
index 6fa85d92a94115000180f9d91827db71ed47f83d..4464c9b8fc4ec11cb95d0ec5626ce2044228e388 100644
--- a/content/browser/renderer_host/render_widget_host_view_guest.cc
+++ b/content/browser/renderer_host/render_widget_host_view_guest.cc
@@ -63,7 +63,8 @@ gfx::Rect RenderWidgetHostViewGuest::GetBoundsInRootWindow() {
 }
 
 gfx::GLSurfaceHandle RenderWidgetHostViewGuest::GetCompositingSurface() {
-  return gfx::GLSurfaceHandle(gfx::kNullPluginWindow, gfx::TEXTURE_TRANSPORT);
+  return gfx::GLSurfaceHandle(gfx::kNullPluginWindow,
+                              gfx::TEXTURE_TRANSPORT_NO_PARTIAL_SWAP);
 }
 
 void RenderWidgetHostViewGuest::Show() {
@@ -121,16 +122,7 @@ void RenderWidgetHostViewGuest::AcceleratedSurfaceBuffersSwapped(
 void RenderWidgetHostViewGuest::AcceleratedSurfacePostSubBuffer(
     const GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params& params,
     int gpu_host_id) {
-  DCHECK(enable_compositing_);
-  if (enable_compositing_) {
-    guest_->SendMessageToEmbedder(
-        new BrowserPluginMsg_BuffersSwapped(
-            guest_->instance_id(),
-            params.surface_size,
-            params.mailbox_name,
-            params.route_id,
-            gpu_host_id));
-  }
+  NOTREACHED();
 }
 
 void RenderWidgetHostViewGuest::SetBounds(const gfx::Rect& rect) {