(fix landed) Reland of name MaximizeMode to TabletMode

ash/wm/tablet_mode/tablet_mode_event_handler.h

Index: ash/wm/tablet_mode/tablet_mode_event_handler.h
diff --git a/ash/wm/tablet_mode/tablet_mode_event_handler.h b/ash/wm/tablet_mode/tablet_mode_event_handler.h
new file mode 100644
index 0000000000000000000000000000000000000000..8c30275d96cbb4c90dccb9c6203a51a8bd2d542f
--- /dev/null
+++ b/ash/wm/tablet_mode/tablet_mode_event_handler.h
@@ -0,0 +1,37 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef ASH_WM_TABLET_MODE_TABLET_MODE_EVENT_HANDLER_H_
+#define ASH_WM_TABLET_MODE_TABLET_MODE_EVENT_HANDLER_H_
+
+#include "base/macros.h"
+
+namespace ui {
+class TouchEvent;
+}
+
+namespace ash {
+namespace wm {
+
+// TabletModeEventHandler handles toggling fullscreen when appropriate.
+// TabletModeEventHandler installs event handlers in an environment specific
+// way, e.g. EventHandler for aura.
+class TabletModeEventHandler {
+ public:
+  TabletModeEventHandler();
+  virtual ~TabletModeEventHandler();
+
+ protected:
+  // Subclasses call this to toggle fullscreen. If a toggle happened returns
+  // true.
+  bool ToggleFullscreen(const ui::TouchEvent& event);
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(TabletModeEventHandler);
+};
+
+}  // namespace wm
+}  // namespace ash
+
+#endif  // ASH_WM_TABLET_MODE_TABLET_MODE_EVENT_HANDLER_H_