Remove //chrome as an embedder of blimp.

chrome/browser/android/blimp/chrome_compositor_dependencies.h

-// Copyright 2016 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 CHROME_BROWSER_ANDROID_BLIMP_CHROME_COMPOSITOR_DEPENDENCIES_H_
-#define CHROME_BROWSER_ANDROID_BLIMP_CHROME_COMPOSITOR_DEPENDENCIES_H_
-
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "blimp/client/public/compositor/compositor_dependencies.h"
-#include "ui/android/context_provider_factory.h"
-
-// A wrapper for the Blimp compositor dependencies that passes through to the
-// ui::ContextProviderFactory. The ContextProviderFactory must outlive this
-// class.
-class ChromeCompositorDependencies
-    : public blimp::client::CompositorDependencies {
- public:
-  ChromeCompositorDependencies(
-      ui::ContextProviderFactory* context_provider_factory);
-  ~ChromeCompositorDependencies() override;
-
-  // CompositorDependencies implementation.
-  gpu::GpuMemoryBufferManager* GetGpuMemoryBufferManager() override;
-  cc::SurfaceManager* GetSurfaceManager() override;
-  cc::FrameSinkId AllocateFrameSinkId() override;
-  void GetContextProviders(const ContextProviderCallback& callback) override;
-
- private:
-  void OnGpuChannelEstablished(
-      const ContextProviderCallback& callback,
-      scoped_refptr<gpu::GpuChannelHost> gpu_channel_host,
-      ui::ContextProviderFactory::GpuChannelHostResult result);
-
-  void HandlePendingRequests(gpu::GpuChannelHost* gpu_channel_host);
-
-  ui::ContextProviderFactory* context_provider_factory_;
-
-  // Worker context shared across all Blimp Compositors.
-  scoped_refptr<cc::ContextProvider> shared_main_thread_worker_context_;
-
-  base::WeakPtrFactory<ChromeCompositorDependencies> weak_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(ChromeCompositorDependencies);
-};
-
-#endif  // CHROME_BROWSER_ANDROID_BLIMP_CHROME_COMPOSITOR_DEPENDENCIES_H_