cc: Adding creation location to debug BeginFrameArgs objects.

cc/trees/single_thread_proxy.cc

Index: cc/trees/single_thread_proxy.cc
diff --git a/cc/trees/single_thread_proxy.cc b/cc/trees/single_thread_proxy.cc
index 98015a8444f73cf6e0321ccf343c32ed631e63d2..d312a0c0ca8b3fb5bbd481d9eb08d5d5be9fad09 100644
--- a/cc/trees/single_thread_proxy.cc
+++ b/cc/trees/single_thread_proxy.cc
@@ -492,10 +492,9 @@ void SingleThreadProxy::CompositeImmediately(base::TimeTicks frame_begin_time) {
   }
 
   {
-    BeginFrameArgs begin_frame_args(
-        BeginFrameArgs::Create(frame_begin_time,
-                               base::TimeTicks(),
-                               BeginFrameArgs::DefaultInterval()));
+    BeginFrameArgs begin_frame_args(BeginFrameArgs::Create(
+        BEGINFRAME_FROM_HERE, frame_begin_time, base::TimeTicks(),
+        BeginFrameArgs::DefaultInterval(), BeginFrameArgs::SYNCHRONOUS));
     DoBeginMainFrame(begin_frame_args);
     DoCommit();