Remove window/host accessors from WindowEventDispatcher. Include-What-You-Use for WindowTreeHost.

[email protected]
http://crbug.com/308843

Review URL: https://codereview.chromium.org/196383014

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@258401 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/printing/print_dialog_cloud.cc b/chrome/browser/printing/print_dialog_cloud.cc
index 91a0558..79cb93e 100644
--- a/chrome/browser/printing/print_dialog_cloud.cc
+++ b/chrome/browser/printing/print_dialog_cloud.cc
@@ -42,7 +42,7 @@
 
 #if defined(USE_AURA)
 #include "ui/aura/window.h"
-#include "ui/aura/window_event_dispatcher.h"
+#include "ui/aura/window_tree_host.h"
 #endif
 
 #if defined(OS_WIN)