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

ui/gl/gl_bindings.h

 // 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.
 
 #ifndef UI_GL_GL_BINDINGS_H_
 #define UI_GL_GL_BINDINGS_H_
 
 #include <string>
 
 // Includes the platform independent and platform dependent GL headers.
 // Only include this in cc files. It pulls in system headers, including
 // the X11 headers on linux, which define all kinds of macros that are
 // liable to cause conflicts.
 
 #include <GL/gl.h>
 #include <GL/glext.h>
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
 
 #include "base/logging.h"
 #include "base/threading/thread_local.h"
 #include "build/build_config.h"
 #include "ui/gl/gl_export.h"
 
 // The standard OpenGL native extension headers are also included.
-#if defined(OS_WIN)
-#include <GL/wglext.h>
-#elif defined(OS_MACOSX)
-#include <OpenGL/OpenGL.h>
-#elif defined(USE_X11)
+#if defined(USE_X11)
 #include <GL/glx.h>
 #include <GL/glxext.h>
 
 // Undefine some macros defined by X headers. This is why this file should only
 // be included in .cc files.
 #undef Bool
 #undef None
 #undef Status
 #endif
 
@@ skipping 240 matching lines @@
 #ifndef GL_EXT_texture_rg
 #define GL_EXT_texture_rg 1
 #define GL_RED_EXT 0x1903
 #define GL_RG_EXT 0x8227
 #define GL_R8_EXT 0x8229
 #define GL_RG8_EXT 0x822B
 #endif /* GL_EXT_texture_rg */
 
 #define GL_GLEXT_PROTOTYPES 1
 
-#if defined(OS_WIN)
-#define GL_BINDING_CALL WINAPI
-#else
 #define GL_BINDING_CALL
-#endif
 
 #define GL_SERVICE_LOG(args) DLOG(INFO) << args;
 #if defined(NDEBUG)
   #define GL_SERVICE_LOG_CODE_BLOCK(code)
 #else
   #define GL_SERVICE_LOG_CODE_BLOCK(code) code
 #endif
 
 // Forward declare OSMesa types.
 typedef struct osmesa_context *OSMesaContext;
 typedef void (*OSMESAproc)();
 
 // Forward declare EGL types.
 typedef uint64 EGLuint64CHROMIUM;
 
 #include "gl_bindings_autogen_gl.h"
 #include "gl_bindings_autogen_osmesa.h"
 
-#if defined(OS_WIN)
-#include "gl_bindings_autogen_egl.h"
-#include "gl_bindings_autogen_wgl.h"
-#elif defined(USE_X11)
+#if defined(USE_X11)
 #include "gl_bindings_autogen_egl.h"
 #include "gl_bindings_autogen_glx.h"
 #elif defined(USE_OZONE)
 #include "gl_bindings_autogen_egl.h"
 #elif defined(OS_ANDROID)
 #include "gl_bindings_autogen_egl.h"
 #endif
 
 namespace gfx {
 
@@ skipping 23 matching lines @@
   void ClearBindings();
 
   ProcsOSMESA fn;
   ProcsOSMESA debug_fn;
   ExtensionsOSMESA ext;
 
  private:
   static std::string GetPlatformExtensions();
 };
 
-#if defined(OS_WIN)
-struct GL_EXPORT DriverWGL {
-  void InitializeStaticBindings();
-  void InitializeDebugBindings();
-  void ClearBindings();
-
-  ProcsWGL fn;
-  ProcsWGL debug_fn;
-  ExtensionsWGL ext;
-
- private:
-  static std::string GetPlatformExtensions();
-};
-#endif
-
-#if defined(OS_WIN) || defined(USE_X11) || defined(OS_ANDROID) || defined(USE_OZONE)
 struct GL_EXPORT DriverEGL {
   void InitializeStaticBindings();
   void InitializeDebugBindings();
   void ClearBindings();
 
   ProcsEGL fn;
   ProcsEGL debug_fn;
   ExtensionsEGL ext;
 
  private:
   static std::string GetPlatformExtensions();
 };
-#endif
 
 #if defined(USE_X11)
 struct GL_EXPORT DriverGLX {
   void InitializeStaticBindings();
   void InitializeDebugBindings();
   void ClearBindings();
 
   ProcsGLX fn;
   ProcsGLX debug_fn;
   ExtensionsGLX ext;
 
  private:
   static std::string GetPlatformExtensions();
 };
 #endif
 
 // This #define is here to support autogenerated code.
 #define g_current_gl_context g_current_gl_context_tls->Get()
 GL_EXPORT extern base::ThreadLocalPointer<GLApi>* g_current_gl_context_tls;
 
 GL_EXPORT extern OSMESAApi* g_current_osmesa_context;
 GL_EXPORT extern DriverGL g_driver_gl;
 GL_EXPORT extern DriverOSMESA g_driver_osmesa;
 
-#if defined(OS_WIN)
-
-GL_EXPORT extern EGLApi* g_current_egl_context;
-GL_EXPORT extern WGLApi* g_current_wgl_context;
-GL_EXPORT extern DriverEGL g_driver_egl;
-GL_EXPORT extern DriverWGL g_driver_wgl;
-
-#elif defined(USE_X11)
+#if defined(USE_X11)
 
 GL_EXPORT extern EGLApi* g_current_egl_context;
 GL_EXPORT extern GLXApi* g_current_glx_context;
 GL_EXPORT extern DriverEGL g_driver_egl;
 GL_EXPORT extern DriverGLX g_driver_glx;
 
 #elif defined(USE_OZONE)
 
 GL_EXPORT extern EGLApi* g_current_egl_context;
 GL_EXPORT extern DriverEGL g_driver_egl;
 
 #elif defined(OS_ANDROID)
 
 GL_EXPORT extern EGLApi* g_current_egl_context;
 GL_EXPORT extern DriverEGL g_driver_egl;
 
 #endif
 
 }  // namespace gfx
 
 #endif  // UI_GL_GL_BINDINGS_H_