Use GpuPreferences to avoid directly accessing switches in gpu related code

content/common/gpu/gpu_channel_manager.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 CONTENT_COMMON_GPU_GPU_CHANNEL_MANAGER_H_
 #define CONTENT_COMMON_GPU_GPU_CHANNEL_MANAGER_H_
 
 #include <stdint.h>
 
 #include <deque>
@@ skipping 18 matching lines @@
 
 namespace base {
 class WaitableEvent;
 }
 
 namespace gfx {
 class GLShareGroup;
 }
 
 namespace gpu {
+struct GpuPreferences;
 class PreemptionFlag;
 class SyncPointClient;
 class SyncPointManager;
 struct SyncToken;
 union ValueState;
 namespace gles2 {
 class FramebufferCompletenessCache;
 class MailboxManager;
 class ProgramCache;
 class ShaderTranslatorCache;
@@ skipping 13 matching lines @@
 struct EstablishChannelParams;
 #if defined(OS_MACOSX)
 struct BufferPresentedParams;
 #endif
 
 // A GpuChannelManager is a thread responsible for issuing rendering commands
 // managing the lifetimes of GPU channels and forwarding IPC requests from the
 // browser process to them based on the corresponding renderer ID.
 class CONTENT_EXPORT GpuChannelManager {
  public:
-  GpuChannelManager(GpuChannelManagerDelegate* delegate,
+  GpuChannelManager(const gpu::GpuPreferences& gpu_preferences,
+                    GpuChannelManagerDelegate* delegate,
                     GpuWatchdog* watchdog,
                     base::SingleThreadTaskRunner* task_runner,
                     base::SingleThreadTaskRunner* io_task_runner,
                     base::WaitableEvent* shutdown_event,
                     gpu::SyncPointManager* sync_point_manager,
                     GpuMemoryBufferFactory* gpu_memory_buffer_factory);
   virtual ~GpuChannelManager();
 
   GpuChannelManagerDelegate* delegate() const { return delegate_; }
 
@@ skipping 16 matching lines @@
 
   void LoseAllContexts();
 
 #if defined(OS_MACOSX)
   void AddImageTransportSurface(int32_t routing_id,
                                 ImageTransportHelper* image_transport_helper);
   void RemoveImageTransportSurface(int32_t routing_id);
   void BufferPresented(const BufferPresentedParams& params);
 #endif
 
+  const gpu::GpuPreferences& gpu_preferences() const {
+    return gpu_preferences_;
+  }
   gpu::gles2::ProgramCache* program_cache();
   gpu::gles2::ShaderTranslatorCache* shader_translator_cache();
   gpu::gles2::FramebufferCompletenessCache* framebuffer_completeness_cache();
 
   GpuMemoryManager* gpu_memory_manager() { return &gpu_memory_manager_; }
 
   GpuChannel* LookupChannel(int32_t client_id) const;
 
   gfx::GLSurface* GetDefaultOffscreenSurface();
 
@@ skipping 43 matching lines @@
 
  private:
   void InternalDestroyGpuMemoryBuffer(gfx::GpuMemoryBufferId id, int client_id);
   void InternalDestroyGpuMemoryBufferOnIO(gfx::GpuMemoryBufferId id,
                                           int client_id);
 #if defined(OS_ANDROID)
   void ScheduleWakeUpGpu();
   void DoWakeUpGpu();
 #endif
 
+  const gpu::GpuPreferences& gpu_preferences_;
+
   GpuChannelManagerDelegate* const delegate_;
 #if defined(OS_MACOSX)
   IDMap<ImageTransportHelper> image_transport_map_;
 #endif
 
   GpuWatchdog* watchdog_;
 
   base::WaitableEvent* shutdown_event_;
 
   scoped_refptr<gfx::GLShareGroup> share_group_;
@@ skipping 20 matching lines @@
   // that any WeakPtrs to Controller are invalidated before its members
   // variable's destructors are executed, rendering them invalid.
   base::WeakPtrFactory<GpuChannelManager> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuChannelManager);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_GPU_CHANNEL_MANAGER_H_