Refactor GL surface format handling

ui/gl/gl_surface_wgl.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 "ui/gl/gl_surface_wgl.h"
 
 #include <memory>
 
 #include "base/logging.h"
 #include "base/trace_event/trace_event.h"
@@ skipping 174 matching lines @@
 
 NativeViewGLSurfaceWGL::NativeViewGLSurfaceWGL(gfx::AcceleratedWidget window)
     : window_(window), child_window_(NULL), device_context_(NULL) {
   DCHECK(window);
 }
 
 NativeViewGLSurfaceWGL::~NativeViewGLSurfaceWGL() {
   Destroy();
 }
 
-bool NativeViewGLSurfaceWGL::Initialize(GLSurface::Format format) {
+bool NativeViewGLSurfaceWGL::Initialize(GLSurfaceFormat format) {
   DCHECK(!device_context_);
 
   RECT rect;
   if (!GetClientRect(window_, &rect)) {
     LOG(ERROR) << "GetClientRect failed.\n";
     Destroy();
     return false;
   }
 
   // Create a child window. WGL has problems using a window handle owned by
@@ skipping 121 matching lines @@
   // Some implementations of Pbuffer do not support having a 0 size. For such
   // cases use a (1, 1) surface.
   if (size_.GetArea() == 0)
     size_.SetSize(1, 1);
 }
 
 PbufferGLSurfaceWGL::~PbufferGLSurfaceWGL() {
   Destroy();
 }
 
-bool PbufferGLSurfaceWGL::Initialize(GLSurface::Format format) {
+bool PbufferGLSurfaceWGL::Initialize(GLSurfaceFormat format) {
   DCHECK(!device_context_);
 
   if (!g_driver_wgl.fn.wglCreatePbufferARBFn) {
     LOG(ERROR) << "wglCreatePbufferARB not available.";
     Destroy();
     return false;
   }
 
   const int kNoAttributes[] = { 0 };
   pbuffer_ = wglCreatePbufferARB(g_display->device_context(),
@@ skipping 40 matching lines @@
 
 gfx::Size PbufferGLSurfaceWGL::GetSize() {
   return size_;
 }
 
 void* PbufferGLSurfaceWGL::GetHandle() {
   return device_context_;
 }
 
 }  // namespace gl