Fix layering violation where content is included by gpu.

ppapi/proxy/ppapi_command_buffer_proxy.cc

Index: ppapi/proxy/ppapi_command_buffer_proxy.cc
diff --git a/ppapi/proxy/ppapi_command_buffer_proxy.cc b/ppapi/proxy/ppapi_command_buffer_proxy.cc
index 2dea1bf6d1901ff838633450c0a4a77fd0251d90..38e37e8e8667e650a9e637bb62d2609bd3feb1cd 100644
--- a/ppapi/proxy/ppapi_command_buffer_proxy.cc
+++ b/ppapi/proxy/ppapi_command_buffer_proxy.cc
@@ -45,42 +45,6 @@ bool PpapiCommandBufferProxy::Echo(const base::Closure& callback) {
   return false;
 }
 
-bool PpapiCommandBufferProxy::SetSurfaceVisible(bool visible) {
-  NOTIMPLEMENTED();
-  return true;
-}
-
-bool PpapiCommandBufferProxy::DiscardBackbuffer() {
-  NOTIMPLEMENTED();
-  return true;
-}
-
-bool PpapiCommandBufferProxy::EnsureBackbuffer() {
-  NOTIMPLEMENTED();
-  return true;
-}
-
-uint32 PpapiCommandBufferProxy::InsertSyncPoint() {
-  NOTIMPLEMENTED();
-  return 0;
-}
-
-void PpapiCommandBufferProxy::WaitSyncPoint(uint32 sync_point) {
-  NOTIMPLEMENTED();
-}
-
-bool PpapiCommandBufferProxy::SignalSyncPoint(uint32 sync_point,
-                                              const base::Closure& callback) {
-  NOTIMPLEMENTED();
-  return false;
-}
-
-void PpapiCommandBufferProxy::SetMemoryAllocationChangedCallback(
-    const base::Callback<void(
-      const content::GpuMemoryAllocationForRenderer&)>& callback) {
-  NOTIMPLEMENTED();
-}
-
 bool PpapiCommandBufferProxy::SetParent(
     CommandBufferProxy* parent_command_buffer,
     uint32 parent_texture_id) {
@@ -95,16 +59,6 @@ void PpapiCommandBufferProxy::SetChannelErrorCallback(
   channel_error_callback_ = callback;
 }
 
-void PpapiCommandBufferProxy::SetNotifyRepaintTask(
-    const base::Closure& callback) {
-  NOTIMPLEMENTED();
-}
-
-void PpapiCommandBufferProxy::SetOnConsoleMessageCallback(
-    const GpuConsoleMessageCallback& callback) {
-  NOTIMPLEMENTED();
-}
-
 bool PpapiCommandBufferProxy::Initialize() {
   return Send(new PpapiHostMsg_PPBGraphics3D_InitCommandBuffer(
       ppapi::API_ID_PPB_GRAPHICS_3D, resource_));