Compute GpuDriverBugWorkarounds only one time in the GPU process

content/common/gpu/gpu_channel_manager.h

Index: content/common/gpu/gpu_channel_manager.h
diff --git a/content/common/gpu/gpu_channel_manager.h b/content/common/gpu/gpu_channel_manager.h
index 875656f47b697e82be97ce436e0e9609a6c3198b..cd18afc916da66c5c850a13c3b59f91b2432db0b 100644
--- a/content/common/gpu/gpu_channel_manager.h
+++ b/content/common/gpu/gpu_channel_manager.h
@@ -40,6 +40,7 @@ class GLShareGroup;
 
 namespace gpu {
 struct GpuPreferences;
+class GpuDriverBugWorkarounds;
 class PreemptionFlag;
 class SyncPointClient;
 class SyncPointManager;
@@ -73,14 +74,16 @@ class CONTENT_EXPORT GpuChannelManager {
       void(int32_t, const base::TimeTicks&, const base::TimeDelta&)>
       BufferPresentedCallback;
 #endif
-  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);
+  GpuChannelManager(
+      const gpu::GpuPreferences& gpu_preferences,
+      const gpu::GpuDriverBugWorkarounds& gpu_driver_bug_workarounds,
+      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_; }
@@ -120,6 +123,9 @@ class CONTENT_EXPORT GpuChannelManager {
   const gpu::GpuPreferences& gpu_preferences() const {
     return gpu_preferences_;
   }
+  const gpu::GpuDriverBugWorkarounds& gpu_driver_bug_workarounds() const {
+    return gpu_driver_bug_workarounds_;
+  }
   gpu::gles2::ProgramCache* program_cache();
   gpu::gles2::ShaderTranslatorCache* shader_translator_cache();
   gpu::gles2::FramebufferCompletenessCache* framebuffer_completeness_cache();
@@ -185,6 +191,8 @@ class CONTENT_EXPORT GpuChannelManager {
 
   const gpu::GpuPreferences& gpu_preferences_;
 
+  const gpu::GpuDriverBugWorkarounds& gpu_driver_bug_workarounds_;
+
   GpuChannelManagerDelegate* const delegate_;
 #if defined(OS_MACOSX)
   base::hash_map<int32_t, BufferPresentedCallback>