Cleanup SurfaceVisibility code.

mojo/gles2/command_buffer_client_impl.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "mojo/gles2/command_buffer_client_impl.h"
 
 #include <limits>
 
 #include "base/logging.h"
 #include "base/process/process_handle.h"
@@ skipping 351 matching lines @@
                                               const base::Closure& callback) {
   // TODO(piman)
 }
 
 void CommandBufferClientImpl::SignalQuery(uint32_t query,
                                           const base::Closure& callback) {
   // TODO(piman)
   NOTIMPLEMENTED();
 }
 
-void CommandBufferClientImpl::SetSurfaceVisible(bool visible) {
-  // TODO(piman)
-  NOTIMPLEMENTED();
-}
-
 void CommandBufferClientImpl::DidLoseContext(int32_t lost_reason) {
   last_state_.error = gpu::error::kLostContext;
   last_state_.context_lost_reason =
       static_cast<gpu::error::ContextLostReason>(lost_reason);
   delegate_->ContextLost();
 }
 
 void CommandBufferClientImpl::TryUpdateState() {
   if (last_state_.error == gpu::error::kNoError)
     shared_state()->Read(&last_state_);
@@ skipping 61 matching lines @@
 
   // It is also safe to wait on the same context.
   if (sync_token->namespace_id() == gpu::CommandBufferNamespace::MOJO &&
       sync_token->command_buffer_id() == GetCommandBufferID())
     return true;
 
   return false;
 }
 
 }  // namespace gles2