ash: Add functionality to specify how long a tooltip is shown for a window.

ui/views/corewm/tooltip_controller.h

Index: ui/views/corewm/tooltip_controller.h
diff --git a/ui/views/corewm/tooltip_controller.h b/ui/views/corewm/tooltip_controller.h
index efce0ac4d122d9f5ca0773b993297921baf286fe..53fe4313bdbe689de298766d56586e1604cd7ef1 100644
--- a/ui/views/corewm/tooltip_controller.h
+++ b/ui/views/corewm/tooltip_controller.h
@@ -5,6 +5,8 @@
 #ifndef UI_VIEWS_COREWM_TOOLTIP_CONTROLLER_H_
 #define UI_VIEWS_COREWM_TOOLTIP_CONTROLLER_H_
 
+#include <map>
+
 #include "base/memory/scoped_ptr.h"
 #include "base/string16.h"
 #include "base/timer.h"
@@ -36,6 +38,8 @@ class VIEWS_EXPORT TooltipController : public aura::client::TooltipClient,
 
   // Overridden from aura::client::TooltipClient.
   virtual void UpdateTooltip(aura::Window* target) OVERRIDE;
+  virtual void SetTooltipShownTimeout(aura::Window* target,
+                                      int timeout_in_ms) OVERRIDE;
   virtual void SetTooltipsEnabled(bool enable) OVERRIDE;
 
   // Overridden from ui::EventHandler.
@@ -89,6 +93,8 @@ class VIEWS_EXPORT TooltipController : public aura::client::TooltipClient,
   // Returns true if the cursor is visible.
   bool IsCursorVisible();
 
+  int GetTooltipShownTimeout();
+
   const gfx::ScreenType screen_type_;
 
   aura::Window* tooltip_window_;
@@ -111,6 +117,8 @@ class VIEWS_EXPORT TooltipController : public aura::client::TooltipClient,
 
   bool tooltips_enabled_;
 
+  std::map<aura::Window*, int> tooltip_shown_timeout_map_;
+
   DISALLOW_COPY_AND_ASSIGN(TooltipController);
 };