Compute GpuDriverBugWorkarounds only one time in the GPU process

content/gpu/gpu_child_thread.cc

Index: content/gpu/gpu_child_thread.cc
diff --git a/content/gpu/gpu_child_thread.cc b/content/gpu/gpu_child_thread.cc
index 6eee7220acd55d4fc2c1bbc1916e39f4a11e0a58..6bb17ab6d39d9b9ddb2cd74f618d842f41209f6a 100644
--- a/content/gpu/gpu_child_thread.cc
+++ b/content/gpu/gpu_child_thread.cc
@@ -364,6 +364,9 @@ void GpuChildThread::StoreShaderToDisk(int32_t client_id,
 void GpuChildThread::OnInitialize(const gpu::GpuPreferences& gpu_preferences) {
   gpu_preferences_ = gpu_preferences;
 
+  gpu::GpuDriverBugWorkarounds::Initialize(
+      base::CommandLine::ForCurrentProcess(), gpu_driver_bug_workarounds_);
+
   gpu_info_.video_decode_accelerator_capabilities =
       content::GpuVideoDecodeAccelerator::GetCapabilities(gpu_preferences_);
   gpu_info_.video_encode_accelerator_supported_profiles =
@@ -395,12 +398,12 @@ void GpuChildThread::OnInitialize(const gpu::GpuPreferences& gpu_preferences) {
   // Defer creation of the render thread. This is to prevent it from handling
   // IPC messages before the sandbox has been enabled and all other necessary
   // initialization has succeeded.
-  gpu_channel_manager_.reset(
-      new GpuChannelManager(gpu_preferences_, this, watchdog_thread_.get(),
-                            base::ThreadTaskRunnerHandle::Get().get(),
-                            ChildProcess::current()->io_task_runner(),
-                            ChildProcess::current()->GetShutDownEvent(),
-                            sync_point_manager_, gpu_memory_buffer_factory_));
+  gpu_channel_manager_.reset(new GpuChannelManager(
+      gpu_preferences_, gpu_driver_bug_workarounds_, this,
+      watchdog_thread_.get(), base::ThreadTaskRunnerHandle::Get().get(),
+      ChildProcess::current()->io_task_runner(),
+      ChildProcess::current()->GetShutDownEvent(), sync_point_manager_,
+      gpu_memory_buffer_factory_));
 
   media_service_.reset(new MediaService(gpu_channel_manager_.get()));