Hide location bar on WebKit programmatic scroll.

content/public/browser/web_contents_delegate.h

Index: content/public/browser/web_contents_delegate.h
diff --git a/content/public/browser/web_contents_delegate.h b/content/public/browser/web_contents_delegate.h
index 6705514a7bc03dd437982049294404eedc0e92ab..92c5c37dd73ab0f0736c724c086bd85fa44b91d3 100644
--- a/content/public/browser/web_contents_delegate.h
+++ b/content/public/browser/web_contents_delegate.h
@@ -342,6 +342,10 @@ class CONTENT_EXPORT WebContentsDelegate {
   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) {}