Change namespace from ui to gfx for NativePixmap related code

gpu/ipc/client/gpu_memory_buffer_impl_ozone_native_pixmap.h

 // Copyright 2014 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 GPU_IPC_CLIENT_GPU_MEMORY_BUFFER_IMPL_OZONE_NATIVE_PIXMAP_H_
 #define GPU_IPC_CLIENT_GPU_MEMORY_BUFFER_IMPL_OZONE_NATIVE_PIXMAP_H_
 
 #include <stddef.h>
 
 #include <memory>
 
 #include "base/macros.h"
 #include "gpu/gpu_export.h"
 #include "gpu/ipc/client/gpu_memory_buffer_impl.h"
 
-namespace ui {
+namespace gfx {
 class ClientNativePixmap;
 }
 
 namespace gpu {
 
 // Implementation of GPU memory buffer based on Ozone native pixmap.
 class GPU_EXPORT GpuMemoryBufferImplOzoneNativePixmap
     : public GpuMemoryBufferImpl {
  public:
   ~GpuMemoryBufferImplOzoneNativePixmap() override;
@@ skipping 19 matching lines @@
   void Unmap() override;
   int stride(size_t plane) const override;
   gfx::GpuMemoryBufferHandle GetHandle() const override;
 
  private:
   GpuMemoryBufferImplOzoneNativePixmap(
       gfx::GpuMemoryBufferId id,
       const gfx::Size& size,
       gfx::BufferFormat format,
       const DestructionCallback& callback,
-      std::unique_ptr<ui::ClientNativePixmap> native_pixmap,
+      std::unique_ptr<gfx::ClientNativePixmap> native_pixmap,
       const std::vector<gfx::NativePixmapPlane>& planes,
       base::ScopedFD fd);
 
-  std::unique_ptr<ui::ClientNativePixmap> pixmap_;
+  std::unique_ptr<gfx::ClientNativePixmap> pixmap_;
   std::vector<gfx::NativePixmapPlane> planes_;
   base::ScopedFD fd_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferImplOzoneNativePixmap);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_IPC_CLIENT_GPU_MEMORY_BUFFER_IMPL_OZONE_NATIVE_PIXMAP_H_