[chromecast] Remove obsolete TODO

Bug: none
Test: none
Change-Id: Ie783af4aeeca319ab72ef8880a2f919e73eb0fa4
Reviewed-on: https://chromium-review.googlesource.com/1204310Reviewed-by: Luke Halliwell <halliwell@chromium.org>
Commit-Queue: Ryan Daum <rdaum@chromium.org>
Cr-Commit-Position: refs/heads/master@{#588525}

chromecast/graphics/gestures/cast_gesture_handler.h

@@ -5,8 +5,6 @@
 #ifndef CHROMECAST_GRAPHICS_GESTURES_CAST_GESTURE_HANDLER_H_
 #define CHROMECAST_GRAPHICS_GESTURES_CAST_GESTURE_HANDLER_H_
 
-// TODO(rdaum): Move into chromecast/graphics/gestures, which will require some
-// cross-repo maneuvers.
 #include "base/macros.h"
 
 namespace gfx {