Moved creation of GPU command buffer shared memory into the browser process....

ppapi/proxy/ppb_context_3d_proxy.cc

Index: ppapi/proxy/ppb_context_3d_proxy.cc
===================================================================
--- ppapi/proxy/ppb_context_3d_proxy.cc	(revision 76263)
+++ ppapi/proxy/ppb_context_3d_proxy.cc	(working copy)
@@ -177,6 +177,7 @@
 
   // CommandBuffer implementation:
   virtual bool Initialize(int32 size);
+  virtual bool Initialize(base::SharedMemory* buffer, int32 size);
   virtual gpu::Buffer GetRingBuffer();
   virtual State GetState();
   virtual void Flush(int32 put_offset);
@@ -248,6 +249,12 @@
   return false;
 }
 
+bool PepperCommandBuffer::Initialize(base::SharedMemory* buffer, int32 size) {
+  // Not implemented in proxy.
+  NOTREACHED();
+  return false;
+}
+
 gpu::Buffer PepperCommandBuffer::GetRingBuffer() {
   // Return locally cached ring buffer.
   gpu::Buffer buffer;