cc: Changes to use GL API for GpuMemoryBuffers

cc/trees/layer_tree_host.cc

Index: cc/trees/layer_tree_host.cc
diff --git a/cc/trees/layer_tree_host.cc b/cc/trees/layer_tree_host.cc
index 7b0972645a5a0157c49564324626a6dd5b7dfbbd..f008f4cdcd84da0c844c732b71687d5fcbf3da87 100644
--- a/cc/trees/layer_tree_host.cc
+++ b/cc/trees/layer_tree_host.cc
@@ -57,7 +57,8 @@ RendererCapabilities::RendererCapabilities()
       allow_partial_texture_updates(false),
       using_offscreen_context3d(false),
       max_texture_size(0),
-      avoid_pow2_textures(false) {}
+      avoid_pow2_textures(false),
+      use_gpu_memory_buffers(false) {}
 
 RendererCapabilities::~RendererCapabilities() {}
 
@@ -191,6 +192,10 @@ LayerTreeHost::OnCreateAndInitializeOutputSurfaceAttempted(bool success) {
           contents_texture_manager_->CreateTexture(gfx::Size(), GL_RGBA);
     }
 
+    settings_.use_gpu_memory_buffers =
+        settings_.use_gpu_memory_buffers &&
+        proxy_->GetRendererCapabilities().use_gpu_memory_buffers;
+
     client_->DidInitializeOutputSurface(true);
     return CreateSucceeded;
   }