Aura: A little lighter GL synchronization

content/browser/renderer_host/image_transport_factory.cc

Index: content/browser/renderer_host/image_transport_factory.cc
diff --git a/content/browser/renderer_host/image_transport_factory.cc b/content/browser/renderer_host/image_transport_factory.cc
index f1770bc054bfa68c9ef4f70598f701a98888f838..62b471952f07856bc56eb42c21cc329991884d5d 100644
--- a/content/browser/renderer_host/image_transport_factory.cc
+++ b/content/browser/renderer_host/image_transport_factory.cc
@@ -171,7 +171,7 @@ class ImageTransportClientTexture : public OwnedTexture {
         GL_TEXTURE_2D,
         reinterpret_cast<const signed char*>(mailbox_name.c_str()));
     size_ = new_size;
-    host_context_->flush();
+    host_context_->shallowFlushCHROMIUM();
   }
 
   virtual std::string Produce() OVERRIDE {