Hide location bar on WebKit programmatic scroll.

content/public/browser/web_contents_delegate.h

 // Copyright (c) 2012 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 CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_DELEGATE_H_
 
 #include <set>
 #include <string>
 
@@ skipping 324 matching lines @@
   virtual void EnumerateDirectory(WebContents* web_contents,
                                   int request_id,
                                   const base::FilePath& path) {}
 
   // Called when the renderer puts a tab into or out of fullscreen mode.
   virtual void ToggleFullscreenModeForTab(WebContents* web_contents,
                                           bool enter_fullscreen) {}
   virtual bool IsFullscreenForTabOrPending(
       const WebContents* web_contents) const;
 
+  // Called when the renderer requests the top controls to be hidden or
+  // shown.
+  virtual void RequestShowTopControls(WebContents* web_contents, bool show);

[Ted C, 2013/03/25 16:57:35]

looks like all void functions have their empty default implementations
inlined...I would assume do that for consistency, but I can't speak for the
owners whether they want to keep it this way.

+
   // Called when a Javascript out of memory notification is received.
   virtual void JSOutOfMemory(WebContents* web_contents) {}
 
   // Register a new handler for URL requests with the given scheme.
   // |user_gesture| is true if the registration is made in the context of a user
   // gesture.
   virtual void RegisterProtocolHandler(WebContents* web_contents,
                                        const std::string& protocol,
                                        const GURL& url,
                                        const string16& title,
@@ skipping 73 matching lines @@
   // Called when |this| is no longer the WebContentsDelegate for |source|.
   void Detach(WebContents* source);
 
   // The WebContents that this is currently a delegate for.
   std::set<WebContents*> attached_contents_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_DELEGATE_H_