cc: Adding creation location to debug BeginFrameArgs objects.

ui/compositor/compositor.cc

Index: ui/compositor/compositor.cc
diff --git a/ui/compositor/compositor.cc b/ui/compositor/compositor.cc
index bbf05bbbcd8ff03fd6e8f087f6359ba629a2e32e..c59930a6973847e305a0cca37ed0043694d75d2a 100644
--- a/ui/compositor/compositor.cc
+++ b/ui/compositor/compositor.cc
@@ -239,7 +239,7 @@ void Compositor::Draw() {
     // TODO(nduca): Temporary while compositor calls
     // compositeImmediately() directly.
     cc::BeginFrameArgs args = cc::BeginFrameArgs::Create(
-        gfx::FrameTime::Now(), base::TimeTicks(),
+        BEGINFRAME_FROM_HERE, gfx::FrameTime::Now(), base::TimeTicks(),
         cc::BeginFrameArgs::DefaultInterval(), cc::BeginFrameArgs::SYNCHRONOUS);
     BeginMainFrame(args);
     host_->Composite(args.frame_time);