mac: Finish plumbing for Pepper3D Image Chromium.

ppapi/shared_impl/ppb_graphics_3d_shared.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 PPAPI_SHARED_IMPL_GRAPHICS_3D_IMPL_H_
 #define PPAPI_SHARED_IMPL_GRAPHICS_3D_IMPL_H_
 
 #include <stdint.h>
 
 #include <memory>
@@ skipping 60 matching lines @@
   virtual gpu::CommandBuffer* GetCommandBuffer() = 0;
   virtual gpu::GpuControl* GetGpuControl() = 0;
   virtual int32_t DoSwapBuffers(const gpu::SyncToken& sync_token) = 0;
 
   bool HasPendingSwap() const;
   bool CreateGLES2Impl(int32_t command_buffer_size,
                        int32_t transfer_buffer_size,
                        gpu::gles2::GLES2Implementation* share_gles2);
   void DestroyGLES2Impl();
 
+  // Must be called by this class or subclasses any time the viewport size
+  // changes.
+  void SetSize(int32_t width, int32_t height);
+  int32_t width() { return width_; }
+  int32_t height() { return height_; }
+
  private:
   std::unique_ptr<gpu::gles2::GLES2CmdHelper> gles2_helper_;
   std::unique_ptr<gpu::TransferBuffer> transfer_buffer_;
   std::unique_ptr<gpu::gles2::GLES2Implementation> gles2_impl_;
 
+  // A local cache of the size of the viewport.
+  int32_t width_ = 0;
+  int32_t height_ = 0;
+
   // Callback that needs to be executed when swap-buffers is completed.
   scoped_refptr<TrackedCallback> swap_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(PPB_Graphics3D_Shared);
 };
 
 }  // namespace ppapi
 
 #endif  // PPAPI_SHARED_IMPL_GRAPHICS_3D_IMPL_H_