Remove windows/mac/ios specific code from //ui

ui/gl/gl_context_wgl.cc

Index: ui/gl/gl_context_wgl.cc
diff --git a/ui/gl/gl_context_wgl.cc b/ui/gl/gl_context_wgl.cc
deleted file mode 100644
index fa7f7064772a1d789e9266ba288145a3a3eaae24..0000000000000000000000000000000000000000
--- a/ui/gl/gl_context_wgl.cc
+++ /dev/null
@@ -1,145 +0,0 @@
-// 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.
-
-// This file implements the GLContextWGL and PbufferGLContext classes.
-
-#include "ui/gl/gl_context_wgl.h"
-
-#include "base/logging.h"
-#include "base/trace_event/trace_event.h"
-#include "ui/gl/gl_bindings.h"
-#include "ui/gl/gl_implementation.h"
-#include "ui/gl/gl_surface_wgl.h"
-
-namespace gfx {
-
-GLContextWGL::GLContextWGL(GLShareGroup* share_group)
-    : GLContextReal(share_group),
-      context_(NULL) {
-}
-
-GLContextWGL::~GLContextWGL() {
-  Destroy();
-}
-
-std::string GLContextWGL::GetExtensions() {
-  const char* extensions = NULL;
-  if (g_driver_wgl.fn.wglGetExtensionsStringARBFn)
-    extensions = wglGetExtensionsStringARB(GLSurfaceWGL::GetDisplayDC());
-  else if (g_driver_wgl.fn.wglGetExtensionsStringEXTFn)
-    extensions = wglGetExtensionsStringEXT();
-
-  if (extensions)
-    return GLContext::GetExtensions() + " " + extensions;
-
-  return GLContext::GetExtensions();
-}
-
-bool GLContextWGL::Initialize(
-    GLSurface* compatible_surface, GpuPreference gpu_preference) {
-  // Get the handle of another initialized context in the share group _before_
-  // setting context_. Otherwise this context will be considered initialized
-  // and could potentially be returned by GetHandle.
-  HGLRC share_handle = static_cast<HGLRC>(share_group()->GetHandle());
-
-  context_ = wglCreateContext(
-      static_cast<HDC>(compatible_surface->GetHandle()));
-  if (!context_) {
-    LOG(ERROR) << "Failed to create GL context.";
-    Destroy();
-    return false;
-  }
-
-  if (share_handle) {
-    if (!wglShareLists(share_handle, context_)) {
-      LOG(ERROR) << "Could not share GL contexts.";
-      Destroy();
-      return false;
-    }
-  }
-
-  return true;
-}
-
-void GLContextWGL::Destroy() {
-  if (context_) {
-    wglDeleteContext(context_);
-    context_ = NULL;
-  }
-}
-
-bool GLContextWGL::MakeCurrent(GLSurface* surface) {
-  DCHECK(context_);
-  if (IsCurrent(surface))
-    return true;
-
-  ScopedReleaseCurrent release_current;
-  TRACE_EVENT0("gpu", "GLContextWGL::MakeCurrent");
-
-  if (!wglMakeCurrent(static_cast<HDC>(surface->GetHandle()), context_)) {
-    LOG(ERROR) << "Unable to make gl context current.";
-    return false;
-  }
-
-  // Set this as soon as the context is current, since we might call into GL.
-  SetRealGLApi();
-
-  SetCurrent(surface);
-  if (!InitializeDynamicBindings()) {
-    return false;
-  }
-
-  if (!surface->OnMakeCurrent(this)) {
-    LOG(ERROR) << "Could not make current.";
-    return false;
-  }
-
-  release_current.Cancel();
-  return true;
-}
-
-void GLContextWGL::ReleaseCurrent(GLSurface* surface) {
-  if (!IsCurrent(surface))
-    return;
-
-  SetCurrent(NULL);
-  wglMakeCurrent(NULL, NULL);
-}
-
-bool GLContextWGL::IsCurrent(GLSurface* surface) {
-  bool native_context_is_current =
-      wglGetCurrentContext() == context_;
-
-  // If our context is current then our notion of which GLContext is
-  // current must be correct. On the other hand, third-party code
-  // using OpenGL might change the current context.
-  DCHECK(!native_context_is_current || (GetRealCurrent() == this));
-
-  if (!native_context_is_current)
-    return false;
-
-  if (surface) {
-    if (wglGetCurrentDC() != surface->GetHandle())
-      return false;
-  }
-
-  return true;
-}
-
-void* GLContextWGL::GetHandle() {
-  return context_;
-}
-
-void GLContextWGL::OnSetSwapInterval(int interval) {
-  DCHECK(IsCurrent(NULL));
-  if (gfx::g_driver_wgl.ext.b_WGL_EXT_swap_control) {
-    wglSwapIntervalEXT(interval);
-  } else {
-      LOG(WARNING) <<
-          "Could not disable vsync: driver does not "
-          "support WGL_EXT_swap_control";
-  }
-}
-
-}  // namespace gfx