Allow setting different hit test bounds overrides for mouse and touch

ash/wm/window_properties.h

Index: ash/wm/window_properties.h
diff --git a/ash/wm/window_properties.h b/ash/wm/window_properties.h
index 1bf28ff7ed2e8890736d7a7cd59690898c1cadbf..6ca8799b80cbe8cdd8605252f984c9bd03e6b140 100644
--- a/ash/wm/window_properties.h
+++ b/ash/wm/window_properties.h
@@ -6,6 +6,7 @@
 #define ASH_WM_WINDOW_PROPERTIES_H_
 
 #include "ash/ash_export.h"
+#include "ash/wm/wm_types.h"
 #include "ui/base/ui_base_types.h"
 
 namespace aura {
@@ -29,11 +30,10 @@ namespace internal {
 // the fullscreen state.
 extern const aura::WindowProperty<bool>* const kAnimateToFullscreenKey;
 
-// A property key to indicate whether there is any chrome at all that cannot be
-// hidden when the window is fullscreen. This is unrelated to whether the full
-// chrome can be revealed by hovering the mouse at the top of the screen.
-ASH_EXPORT extern const aura::WindowProperty<bool>* const
-    kFullscreenUsesMinimalChromeKey;
+// A property key to indicate the type of fullscreen that the window is in. The
+// value of the key is irrelevant when not in fullscreen.
+ASH_EXPORT extern const aura::WindowProperty<wm::FullscreenType>* const
+    kFullscreenTypeKey;
 
 // If this is set to true, the window stays in the same root window
 // even if the bounds outside of its root window is set.