Make disabling accelerated VPX decoding a GPU driver bug workaround.

gpu/ipc/service/gpu_channel_manager.h

Index: gpu/ipc/service/gpu_channel_manager.h
diff --git a/gpu/ipc/service/gpu_channel_manager.h b/gpu/ipc/service/gpu_channel_manager.h
index 70a10e4f70b2c41f65ab7dfafceec67f118c2083..c6aba7e3931ab5af97673de1ef83a3674e7201c2 100644
--- a/gpu/ipc/service/gpu_channel_manager.h
+++ b/gpu/ipc/service/gpu_channel_manager.h
@@ -36,6 +36,7 @@ class GLShareGroup;
 }
 
 namespace gpu {
+class GpuDriverBugWorkarounds;
 struct GpuPreferences;
 class PreemptionFlag;
 class SyncPointClient;
@@ -65,6 +66,7 @@ class GpuWatchdogThread;
 class GPU_EXPORT GpuChannelManager {
  public:
   GpuChannelManager(const GpuPreferences& gpu_preferences,
+                    const GpuDriverBugWorkarounds& workarounds,
                     GpuChannelManagerDelegate* delegate,
                     GpuWatchdogThread* watchdog,
                     base::SingleThreadTaskRunner* task_runner,