cc: Implement shared worker contexts. (v1)

content/common/gpu/client/webgraphicscontext3d_command_buffer_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/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h"
 
 #include "third_party/khronos/GLES2/gl2.h"
 #ifndef GL_GLEXT_PROTOTYPES
 #define GL_GLEXT_PROTOTYPES 1
 #endif
@@ skipping 273 matching lines @@
   }
   if (gpu::error::IsError(command_buffer_->GetLastError())) {
     LOG(ERROR) << "Context dead on arrival. Last error: "
                << command_buffer_->GetLastError();
     return false;
   }
 
   return true;
 }
 
+void WebGraphicsContext3DCommandBufferImpl::
+    InvalidateWeakPtrsOnCurrentThread() {
+  weak_ptr_factory_.InvalidateWeakPtrs();
+}
+
 void WebGraphicsContext3DCommandBufferImpl::Destroy() {
   share_group_->RemoveContext(this);
 
   gpu::gles2::GLES2Interface* gl = GetGLInterface();
   if (gl) {
     // First flush the context to ensure that any pending frees of resources
     // are completed. Otherwise, if this context is part of a share group,
     // those resources might leak. Also, any remaining side effects of commands
     // issued on this context might not be visible to other contexts in the
     // share group.
@@ skipping 60 matching lines @@
   {
     base::AutoLock lock(g_default_share_groups_lock.Get());
     g_default_share_groups.Get().erase(host_.get());
   }
 
   gpu::CommandBuffer::State state = command_buffer_->GetLastState();
   UmaRecordContextLost(context_type_, state.error, state.context_lost_reason);
 }
 
 }  // namespace content