Move root_window.* to window_event_dispatcher.*

ui/aura/aura.gyp

Index: ui/aura/aura.gyp
diff --git a/ui/aura/aura.gyp b/ui/aura/aura.gyp
index 9b37c6e77867ddc43c9c6c50e2eab01efad0f08e..376723bf3f74b40ff4ac2de8677f1e114c1123e6 100644
--- a/ui/aura/aura.gyp
+++ b/ui/aura/aura.gyp
@@ -91,31 +91,31 @@
         'layout_manager.h',
         'remote_window_tree_host_win.cc',
         'remote_window_tree_host_win.h',
-        'window_tree_host_mac.mm',
-        'window_tree_host_mac.h',
-        'window_tree_host_ozone.cc',
-        'window_tree_host_ozone.h',
-        'window_tree_host_win.cc',
-        'window_tree_host_win.h',
-        'window_tree_host_x11.cc',
-        'window_tree_host_x11.h',
         'root_window_transformer.h',
-        'root_window.cc',
-        'root_window.h',
         'scoped_window_targeter.cc',
         'scoped_window_targeter.h',
         'window.cc',
         'window.h',
-        'window_targeter.cc',
-        'window_targeter.h',
+        'window_event_dispatcher.cc',
+        'window_event_dispatcher.h',
         'window_delegate.h',
         'window_layer_type.h',
         'window_observer.h',
+        'window_targeter.cc',
+        'window_targeter.h',
         'window_tracker.cc',
         'window_tracker.h',
         'window_tree_host.cc',
         'window_tree_host.h',
         'window_tree_host_delegate.h',
+        'window_tree_host_mac.mm',
+        'window_tree_host_mac.h',
+        'window_tree_host_ozone.cc',
+        'window_tree_host_ozone.h',
+        'window_tree_host_win.cc',
+        'window_tree_host_win.h',
+        'window_tree_host_x11.cc',
+        'window_tree_host_x11.h',
       ],
       'conditions': [
         ['use_x11==1', {
@@ -268,7 +268,7 @@
       'sources': [
         'gestures/gesture_recognizer_unittest.cc',
         'window_tree_host_x11_unittest.cc',
-        'root_window_unittest.cc',
+        'window_event_dispatcher_unittest.cc',
         'test/run_all_unittests.cc',
         'window_targeter_unittest.cc',
         'window_unittest.cc',