mus CommandBufferDriver cleanup detected by static analysis.

components/mus/gles2/command_buffer_driver.cc

 // Copyright 2013 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 "components/mus/gles2/command_buffer_driver.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 68 matching lines @@
 
 bool CommandBufferDriver::Initialize(
     mojo::ScopedSharedBufferHandle shared_state,
     mojo::Array<int32_t> attribs) {
   DCHECK(CalledOnValidThread());
   gpu::gles2::ContextCreationAttribHelper attrib_helper;
   if (!attrib_helper.Parse(attribs.storage()))
     return false;
 
   const bool offscreen = widget_ == gfx::kNullAcceleratedWidget;
-  static scoped_refptr<gfx::GLSurface> underlying_surface;
   if (offscreen) {
     surface_ = gfx::GLSurface::CreateOffscreenGLSurface(gfx::Size(0, 0));
   } else {
 #if defined(USE_OZONE)
     scoped_refptr<gfx::GLSurface> underlying_surface =
         gfx::GLSurface::CreateSurfacelessViewGLSurface(widget_);
     if (!underlying_surface)
       underlying_surface = gfx::GLSurface::CreateViewGLSurface(widget_);
 #else
     scoped_refptr<gfx::GLSurface> underlying_surface =
@@ skipping 444 matching lines @@
 }
 
 void CommandBufferDriver::OnGpuCompletedSwapBuffers(gfx::SwapResult result) {
   DCHECK(CalledOnValidThread());
   if (client_) {
     client_->OnGpuCompletedSwapBuffers(result);
   }
 }
 
 }  // namespace mus