Allow creating GLImage-backed textures with glTexStorage2D.

gpu/ipc/service/gpu_memory_buffer_factory_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_SERVICE_GPU_MEMORY_BUFFER_FACTORY_NATIVE_PIXMAP_H_
 #define GPU_IPC_SERVICE_GPU_MEMORY_BUFFER_FACTORY_NATIVE_PIXMAP_H_
 
 #include <unordered_map>
 #include <utility>
 
@@ skipping 34 matching lines @@
   scoped_refptr<gl::GLImage> CreateImageForGpuMemoryBuffer(
       const gfx::GpuMemoryBufferHandle& handle,
       const gfx::Size& size,
       gfx::BufferFormat format,
       unsigned internalformat,
       int client_id,
       SurfaceHandle surface_handle) override;
   scoped_refptr<gl::GLImage> CreateAnonymousImage(
       const gfx::Size& size,
       gfx::BufferFormat format,
+      gfx::BufferUsage usage,
       unsigned internalformat) override;
   unsigned RequiredTextureType() override;
 
  private:
   using NativePixmapMapKey = std::pair<int, int>;
   using NativePixmapMapKeyHash = base::IntPairHash<NativePixmapMapKey>;
   using NativePixmapMap = std::unordered_map<NativePixmapMapKey,
                                              scoped_refptr<gfx::NativePixmap>,
                                              NativePixmapMapKeyHash>;
   NativePixmapMap native_pixmaps_;
   base::Lock native_pixmaps_lock_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferFactoryNativePixmap);
 };
 
 }  // namespace gpu
 
 #endif  // GPU_IPC_SERVICE_GPU_MEMORY_BUFFER_FACTORY_NATIVE_PIXMAP_H_