Re-land: ui: Add GLImage unit test framework.

ui/gl/gl_context.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 <string>
 
 #include "base/bind.h"
 #include "base/cancelable_callback.h"
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
@@ skipping 188 matching lines @@
   force_swap_interval_zero_ = force;
   OnSetSwapInterval(force_swap_interval_zero_ ? 0 : swap_interval_);
 }
 
 bool GLContext::WasAllocatedUsingRobustnessExtension() {
   return false;
 }
 
 bool GLContext::InitializeDynamicBindings() {
   DCHECK(IsCurrent(nullptr));
-  static bool initialized = false;
-  if (initialized)
-    return initialized;
-  initialized = InitializeDynamicGLBindings(GetGLImplementation(), this);
+  bool initialized = InitializeDynamicGLBindings(GetGLImplementation(), this);
   if (!initialized)
     LOG(ERROR) << "Could not initialize dynamic bindings.";
   return initialized;
 }
 
 void GLContext::SetupForVirtualization() {
   if (!virtual_gl_api_) {
     virtual_gl_api_.reset(new VirtualGLApi());
     virtual_gl_api_->Initialize(&g_driver_gl, this);
   }
@@ skipping 27 matching lines @@
 }
 
 GLContextReal::~GLContextReal() {}
 
 void GLContextReal::SetCurrent(GLSurface* surface) {
   GLContext::SetCurrent(surface);
   current_real_context_.Pointer()->Set(surface ? this : nullptr);
 }
 
 }  // namespace gfx