Mac: Add partial swap support to NSOpenGLContext path

content/common/gpu/image_transport_surface.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 CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_H_
 #define CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_H_
 
 #include <vector>
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "content/common/content_export.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_message.h"
 #include "ui/events/latency_info.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/swap_result.h"
 #include "ui/gl/gl_surface.h"
 
+#if defined(OS_MACOSX)
 struct AcceleratedSurfaceMsg_BufferPresented_Params;
 struct GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params;
+#endif
 
 namespace gfx {
 class GLSurface;
 }
 
 namespace gpu {
 class PreemptionFlag;
 namespace gles2 {
 class GLES2Decoder;
 }
@@ skipping 78 matching lines @@
                        gfx::PluginWindowHandle handle);
   ~ImageTransportHelper() override;
 
   bool Initialize();
 
   // IPC::Listener implementation:
   bool OnMessageReceived(const IPC::Message& message) override;
 
   // Helper send functions. Caller fills in the surface specific params
   // like size and surface id. The helper fills in the rest.
+#if defined(OS_MACOSX)
   void SendAcceleratedSurfaceBuffersSwapped(
       GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params params);
+#endif
 
   void SetPreemptByFlag(
       scoped_refptr<gpu::PreemptionFlag> preemption_flag);
 
   // Make the surface's context current.
   bool MakeCurrent();
 
   // Set the default swap interval on the surface.
   static void SetSwapInterval(gfx::GLContext* context);
 
@@ skipping 70 matching lines @@
   bool did_set_swap_interval_;
   std::vector<ui::LatencyInfo> latency_info_;
   base::WeakPtrFactory<PassThroughImageTransportSurface> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PassThroughImageTransportSurface);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_IMAGE_TRANSPORT_SURFACE_H_