cc: Adding creation location to debug BeginFrameArgs objects.

cc/trees/layer_tree_host_impl_unittest.cc

Index: cc/trees/layer_tree_host_impl_unittest.cc
diff --git a/cc/trees/layer_tree_host_impl_unittest.cc b/cc/trees/layer_tree_host_impl_unittest.cc
index db1048d59fce4cc7722f1f4c6b21b7fc66b9a7cc..361e14d29ecf917fd0f62d4ffa370923d47f7a32 100644
--- a/cc/trees/layer_tree_host_impl_unittest.cc
+++ b/cc/trees/layer_tree_host_impl_unittest.cc
@@ -1389,7 +1389,8 @@ class LayerTreeHostImplOverridePhysicalTime : public LayerTreeHostImpl {
                           0) {}
 
   BeginFrameArgs CurrentBeginFrameArgs() const override {
-    return CreateBeginFrameArgsForTesting(fake_current_physical_time_);
+    return CreateBeginFrameArgsForTesting(BEGINFRAME_FROM_HERE,
+                                          fake_current_physical_time_);
   }
 
   void SetCurrentPhysicalTimeTicksForTest(base::TimeTicks fake_now) {