gpu: Allow waiting on sync tokens without sync token client.

android_webview/browser/deferred_gpu_command_service.cc

Index: android_webview/browser/deferred_gpu_command_service.cc
diff --git a/android_webview/browser/deferred_gpu_command_service.cc b/android_webview/browser/deferred_gpu_command_service.cc
index 6f0a146a90b17943a0a7db3731d5a4779b5f8656..648c3c31cbde4650dd3efca04eae8f050a98a82e 100644
--- a/android_webview/browser/deferred_gpu_command_service.cc
+++ b/android_webview/browser/deferred_gpu_command_service.cc
@@ -71,8 +71,7 @@ DeferredGpuCommandService* DeferredGpuCommandService::GetInstance() {
 DeferredGpuCommandService::DeferredGpuCommandService()
     : gpu::InProcessCommandBuffer::Service(
           content::GetGpuPreferencesFromCommandLine()),
-      sync_point_manager_(new gpu::SyncPointManager(true)) {
-}
+      sync_point_manager_(new gpu::SyncPointManager()) {}
 
 DeferredGpuCommandService::~DeferredGpuCommandService() {
   base::AutoLock lock(tasks_lock_);