Move GLSurface creation from //ui/gl to //ui/gl/init.

ui/gl/gl_surface_osmesa_win.h

+// Copyright 2016 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_OSMESA_WIN_H_
+#define UI_GL_GL_SURFACE_OSMESA_WIN_H_
+
+#include <dwmapi.h>
+
+#include "base/macros.h"
+#include "ui/gfx/native_widget_types.h"
+#include "ui/gl/gl_export.h"
+#include "ui/gl/gl_surface.h"
+#include "ui/gl/gl_surface_osmesa.h"
+
+namespace gl {
+
+// This OSMesa GL surface can use GDI to swap the contents of the buffer to a
+// view.
+class GL_EXPORT GLSurfaceOSMesaWin : public GLSurfaceOSMesa {
+ public:
+  explicit GLSurfaceOSMesaWin(gfx::AcceleratedWidget window);
+
+  // Implement subset of GLSurface.
+  bool Initialize(GLSurface::Format format) override;
+  void Destroy() override;
+  bool IsOffscreen() override;
+  gfx::SwapResult SwapBuffers() override;
+  bool SupportsPostSubBuffer() override;
+  gfx::SwapResult PostSubBuffer(int x, int y, int width, int height) override;
+
+ private:
+  ~GLSurfaceOSMesaWin() override;
+
+  gfx::AcceleratedWidget window_;
+  HDC device_context_;
+
+  DISALLOW_COPY_AND_ASSIGN(GLSurfaceOSMesaWin);
+};
+
+}  // namespace gl
+
+#endif  // UI_GL_GL_SURFACE_OSMESA_WIN_H_