compositor_unittests target is unimplmented on Mac

ui/gfx/gl/gl_context_nsview.h

+// Copyright (c) 2011 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_GFX_GL_GL_CONTEXT_NSVIEW_H_
+#define UI_GFX_GL_GL_CONTEXT_NSVIEW_H_
+#pragma once
+
+#include <OpenGL/CGLTypes.h>
+
+#include "base/compiler_specific.h"
+#include "base/memory/scoped_nsobject.h"
+#include "ui/gfx/gl/gl_context.h"
+
+#if defined(__OBJC__)
+@class NSOpenGLContext;
+@class NSOpenGLPixelFormat;
+#else
+class NSOpenGLContext;
+class NSOpenGLPixelFormat;
+#endif

[Ken Russell (switch to Gerrit), 2011/11/17 00:14:40]

Does this header even work if it's included by a non-Objective C file?
scoped_nsobject.h assumes it's included from Objective-C code. I note that all
files which include this one are now .mm.

I would just import NSOpenGL.h here. Either way, the forward declaration of
NSOpenGLPixelFormat definitely isn't needed.

[dhollowa, 2011/11/17 01:41:51]

Done.  That code was added prior to the .cc -> .mm conversion, but as you point
out is no longer needed.

+
+namespace gfx {
+
+class GLSurface;
+
+// GLContextNSView encapsulates an NSView-based GLContext.  This is paired with
+// the GLSurfaceNSView class.
+class GLContextNSView : public GLContext {
+ public:
+  explicit GLContextNSView(GLShareGroup* group);
+  virtual ~GLContextNSView();
+
+  // GLContext:
+  virtual bool Initialize(GLSurface* surface,
+                          GpuPreference gpu_preference) OVERRIDE;
+  virtual void Destroy() OVERRIDE;
+  virtual bool MakeCurrent(GLSurface* surface) OVERRIDE;
+  virtual void ReleaseCurrent(GLSurface* surface) OVERRIDE;
+  virtual bool IsCurrent(GLSurface* surface) OVERRIDE;
+  virtual void* GetHandle() OVERRIDE;
+  virtual void SetSwapInterval(int interval) OVERRIDE;
+
+ private:
+  scoped_nsobject<NSOpenGLContext> context_;
+  GpuPreference gpu_preference_;
+
+  DISALLOW_COPY_AND_ASSIGN(GLContextNSView);
+};
+
+}  // namespace gfx
+
+#endif  // UI_GFX_GL_GL_CONTEXT_NSVIEW_H_