Refactor GL bindings so there is no global GLApi or DriverGL.

gpu/command_buffer/service/context_group.cc

 // Copyright (c) 2012 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 "gpu/command_buffer/service/context_group.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 535 matching lines @@
   }
 
   if (sampler_manager_ != NULL) {
     sampler_manager_->Destroy(have_context);
     sampler_manager_.reset();
     ReportProgress();
   }
 
   memory_tracker_ = NULL;
 
-  passthrough_resources_->Destroy(have_context);
-  passthrough_resources_.reset();
-  ReportProgress();
+  if (passthrough_resources_ != nullptr) {

[jbauman, 2017/01/18 21:32:09]

if (passthrough__resources_) {

[Geoff Lang, 2017/01/19 15:40:06]

Done.

+    passthrough_resources_->Destroy(have_context);
+    passthrough_resources_.reset();
+    ReportProgress();
+  }
 }
 
 uint32_t ContextGroup::GetMemRepresented() const {
   uint32_t total = 0;
   if (buffer_manager_.get())
     total += buffer_manager_->mem_represented();
   if (renderbuffer_manager_.get())
     total += renderbuffer_manager_->mem_represented();
   if (texture_manager_.get())
     total += texture_manager_->mem_represented();
@@ skipping 55 matching lines @@
     GLuint client_id, GLuint* service_id) const {
   Buffer* buffer = buffer_manager_->GetBuffer(client_id);
   if (!buffer)
     return false;
   *service_id = buffer->service_id();
   return true;
 }
 
 }  // namespace gles2
 }  // namespace gpu