gpu: Add support for GLX_EXT_texture_from_pixmap extension.

ui/gl/gl_surface_glx.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_SURFACE_GLX_H_
 #define UI_GL_GL_SURFACE_GLX_H_
 
 #include "base/compiler_specific.h"
 #include "ui/base/x/x11_util.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/size.h"
 #include "ui/gl/gl_export.h"
 #include "ui/gl/gl_surface.h"
 
 namespace gfx {
 
 // Base class for GLX surfaces.
 class GL_EXPORT GLSurfaceGLX : public GLSurface {
  public:
   GLSurfaceGLX();
 
   static bool InitializeOneOff();
 
   // These aren't particularly tied to surfaces, but since we already
   // have the static InitializeOneOff here, it's easiest to reuse its
   // initialization guards.
   static const char* GetGLXExtensions();
   static bool HasGLXExtension(const char* name);
   static bool IsCreateContextRobustnessSupported();
+  static bool IsTextureFromPixmapSupported();
 
   virtual void* GetDisplay() OVERRIDE;
 
   // Get the FB config that the surface was created with or NULL if it is not
   // a GLX drawable.
   virtual void* GetConfig() = 0;
 
  protected:
   virtual ~GLSurfaceGLX();
 
@@ skipping 52 matching lines @@
   gfx::Size size_;
   void* config_;
   XID pbuffer_;
 
   DISALLOW_COPY_AND_ASSIGN(PbufferGLSurfaceGLX);
 };
 
 }  // namespace gfx
 
 #endif  // UI_GL_GL_SURFACE_GLX_H_