gpu: Fix some context lost marking glitches+leaks and add UMA stats

content/renderer/pepper/ppb_graphics_3d_impl.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 "content/renderer/pepper/ppb_graphics_3d_impl.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 294 matching lines @@
     return false;
   if (shared_state_handle)
     *shared_state_handle = command_buffer_->GetSharedStateHandle();
   if (capabilities)
     *capabilities = command_buffer_->GetCapabilities();
   mailbox_ = gpu::Mailbox::Generate();
   if (!command_buffer_->ProduceFrontBuffer(mailbox_))
     return false;
   sync_point_ = command_buffer_->InsertSyncPoint();
 
-  command_buffer_->SetChannelErrorCallback(base::Bind(
+  command_buffer_->SetContextLostCallback(base::Bind(
       &PPB_Graphics3D_Impl::OnContextLost, weak_ptr_factory_.GetWeakPtr()));
 
   command_buffer_->SetOnConsoleMessageCallback(base::Bind(
       &PPB_Graphics3D_Impl::OnConsoleMessage, weak_ptr_factory_.GetWeakPtr()));
   return true;
 }
 
 void PPB_Graphics3D_Impl::OnConsoleMessage(const std::string& message, int id) {
   if (!bound_to_instance_)
     return;
@@ skipping 52 matching lines @@
       instance->module()->GetPluginInterface(PPP_GRAPHICS_3D_INTERFACE));
   // We have to check *again* that the instance exists, because it could have
   // been deleted during GetPluginInterface(). Even the PluginModule could be
   // deleted, but in that case, the instance should also be gone, so the
   // GetInstance check covers both cases.
   if (ppp_graphics_3d && HostGlobals::Get()->GetInstance(this_pp_instance))
     ppp_graphics_3d->Graphics3DContextLost(this_pp_instance);
 }
 
 }  // namespace content