Refactoring the weak_ptr_factory order in src/content/common

content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h

Index: content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h
diff --git a/content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h b/content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h
index 885720299b89a543e849f4a0ac1c76b6a73806ca..2fe59c5d67c0e525c6c5012c04a7e30b11c2a1ae 100644
--- a/content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h
+++ b/content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h
@@ -199,8 +199,6 @@ class WebGraphicsContext3DCommandBufferImpl
 
   gfx::GpuPreference gpu_preference_;
 
-  base::WeakPtrFactory<WebGraphicsContext3DCommandBufferImpl> weak_ptr_factory_;
-
   scoped_ptr<CommandBufferProxyImpl> command_buffer_;
   scoped_ptr<gpu::gles2::GLES2CmdHelper> gles2_helper_;
   scoped_ptr<gpu::TransferBuffer> transfer_buffer_;
@@ -209,6 +207,11 @@ class WebGraphicsContext3DCommandBufferImpl
   Error last_error_;
   SharedMemoryLimits mem_limits_;
   scoped_refptr<ShareGroup> share_group_;
+
+  // Member variables should appear before the WeakPtrFactory, to ensure
+  // that any WeakPtrs to Controller are invalidated before its members
+  // variable's destructors are executed, rendering them invalid.
+  base::WeakPtrFactory<WebGraphicsContext3DCommandBufferImpl> weak_ptr_factory_;
 };
 
 }  // namespace content