gtk: Hide the status bubble when the mouse nears it.

chrome/browser/status_bubble.h

 // Copyright (c) 2009 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 CHROME_BROWSER_STATUS_BUBBLE_H_
 #define CHROME_BROWSER_STATUS_BUBBLE_H_
 
 #include <string>
 
 class GURL;
+namespace gfx {
+class Point;
+}
 
 ////////////////////////////////////////////////////////////////////////////////
 // StatusBubble interface
 //  An interface implemented by an object providing the status display area of
 //  the browser window.
 //
 class StatusBubble {
  public:
   virtual ~StatusBubble() {}
 
   // Sets the bubble contents to a specific string and causes the bubble
   // to display immediately. Subsequent empty SetURL calls (typically called
   // when the cursor exits a link) will set the status bubble back to its
   // status text. To hide the status bubble again, either call SetStatus
   // with an empty string, or call Hide().
   virtual void SetStatus(const std::wstring& status) = 0;
 
   // Sets the bubble text to a URL - if given a non-empty URL, this will cause
   // the bubble to fade in and remain open until given an empty URL or until
   // the Hide() method is called. languages is the value of Accept-Language
   // to determine what characters are understood by a user.
   virtual void SetURL(const GURL& url, const std::wstring& languages) = 0;
 
   // Skip the fade and instant-hide the bubble.
   virtual void Hide() = 0;
 
   // Called when the user's mouse has moved over web content. This is used to
   // determine when the status area should move out of the way of the user's
   // mouse. This may be windows specific pain due to the way messages are
-  // processed for child HWNDs.
-  virtual void MouseMoved() = 0;
+  // processed for child HWNDs.  |position| is the absolute position of the
+  // pointer, and |left_content| is true if the mouse just left the content
+  // area.
+  virtual void MouseMoved(const gfx::Point& position, bool left_content) = 0;
 
   // Called when the download shelf becomes visible or invisible.
   // This is used by to ensure that the status bubble does not obscure
   // the download shelf, when it is visible.
   virtual void UpdateDownloadShelfVisibility(bool visible) = 0;
 };
 
 #endif  // CHROME_BROWSER_STATUS_BUBBLE_H_