During image destroy, delete textures only if we have a GL context.

content/common/gpu/gpu_channel.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.
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
 #include "content/common/gpu/gpu_channel.h"
 
@@ skipping 386 matching lines @@
 
   channel_id_ = IPC::Channel::GenerateVerifiedChannelID("gpu");
   const CommandLine* command_line = CommandLine::ForCurrentProcess();
   log_messages_ = command_line->HasSwitch(switches::kLogPluginMessages);
 }
 
 GpuChannel::~GpuChannel() {
   STLDeleteElements(&deferred_messages_);
   if (preempting_flag_.get())
     preempting_flag_->Reset();
+
+  if (image_manager_ != NULL) {

[reveman, 2014/06/02 16:45:29]

nit: "if (image_manager_)" instead and you can remove {}

[sohanjg, 2014/06/03 05:48:33]

Done.

+    image_manager_->Destroy(true);
+  }
 }
 
 void GpuChannel::Init(base::MessageLoopProxy* io_message_loop,
                       base::WaitableEvent* shutdown_event) {
   DCHECK(!channel_.get());
 
   // Map renderer ID to a (single) channel to that process.
   channel_.reset(new IPC::SyncChannel(
       channel_id_,
       IPC::Channel::MODE_SERVER,
@@ skipping 420 matching lines @@
 uint64 GpuChannel::GetMemoryUsage() {
   uint64 size = 0;
   for (StubMap::Iterator<GpuCommandBufferStub> it(&stubs_);
        !it.IsAtEnd(); it.Advance()) {
     size += it.GetCurrentValue()->GetMemoryUsage();
   }
   return size;
 }
 
 }  // namespace content