content/ui[Android]: Remove ContextProviderFactory.

ui/android/context_provider_factory.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 UI_ANDROID_CONTEXT_PROVIDER_FACTORY_H_
-#define UI_ANDROID_CONTEXT_PROVIDER_FACTORY_H_
-
-#include "base/callback.h"
-#include "base/memory/ref_counted.h"
-#include "cc/surfaces/frame_sink_id.h"
-#include "ui/android/ui_android_export.h"
-
-namespace cc {
-class ContextProvider;
-class VulkanContextProvider;
-class SurfaceManager;
-}
-
-namespace gpu {
-namespace gles2 {
-struct ContextCreationAttribHelper;
-}  // namespace gles
-
-struct SharedMemoryLimits;
-class GpuChannelHost;
-class GpuMemoryBufferManager;
-}  // namespace gpu
-
-namespace ui {
-
-// This class is not thread-safe and should only be accessed from the UI thread.
-class UI_ANDROID_EXPORT ContextProviderFactory {
- public:
-  enum class GpuChannelHostResult {
-    FAILURE_GPU_PROCESS_INITIALIZATION_FAILED,
-
-    // Used when the factory is shutting down. No more requests should be made
-    // to the factory after this response is dispatched.
-    FAILURE_FACTORY_SHUTDOWN,
-
-    // Set if the Context creation was successful.
-    SUCCESS,
-  };
-
-  using GpuChannelHostCallback =
-      base::Callback<void(scoped_refptr<gpu::GpuChannelHost>,
-                          GpuChannelHostResult)>;
-
-  enum class ContextType {
-    BLIMP_RENDER_COMPOSITOR_CONTEXT,
-    BLIMP_RENDER_WORKER_CONTEXT,
-  };
-
-  static ContextProviderFactory* GetInstance();
-
-  // This should only be called once, on startup. Ownership remains with the
-  // caller.
-  static void SetInstance(ContextProviderFactory* context_provider_factory);
-
-  virtual ~ContextProviderFactory(){};
-
-  virtual scoped_refptr<cc::VulkanContextProvider>
-  GetSharedVulkanContextProvider() = 0;
-
-  // The callback may be triggered synchronously if possible. If the creation
-  // fails, a null host is passed with the specified reason.
-  virtual void RequestGpuChannelHost(GpuChannelHostCallback callback) = 0;
-
-  // Creates an offscreen ContextProvider for the compositor. Any shared
-  // contexts passed here *must* have been created using this factory.
-  virtual scoped_refptr<cc::ContextProvider> CreateOffscreenContextProvider(
-      ContextType context_type,
-      gpu::SharedMemoryLimits shared_memory_limits,
-      gpu::gles2::ContextCreationAttribHelper attributes,
-      bool support_locking,
-      bool automatic_flushes,
-      cc::ContextProvider* shared_context_provider,
-      scoped_refptr<gpu::GpuChannelHost> gpu_channel_host) = 0;
-
-  virtual cc::SurfaceManager* GetSurfaceManager() = 0;
-
-  virtual cc::FrameSinkId AllocateFrameSinkId() = 0;
-
-  virtual gpu::GpuMemoryBufferManager* GetGpuMemoryBufferManager() = 0;
-};
-
-}  // namespace ui
-
-#endif  // UI_ANDROID_CONTEXT_PROVIDER_FACTORY_H_