Implement the Instant extended API startMargin, endMargin, and rtl properties and the onmarginchang…

chrome/browser/instant/instant_loader.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 CHROME_BROWSER_INSTANT_INSTANT_LOADER_H_
 #define CHROME_BROWSER_INSTANT_INSTANT_LOADER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 42 matching lines @@
 
   // Initializes |preview_contents_| and loads |instant_url_|.
   void Init();
 
   // Tells the preview page that the user typed |user_text| into the omnibox.
   // If |verbatim| is false, the page predicts the query the user means to type
   // and fetches results for the prediction. If |verbatim| is true, |user_text|
   // is taken as the exact query (no prediction is made).
   void Update(const string16& user_text, bool verbatim);
 
-  // Tells the preview page of the bounds of the omnibox dropdown (in screen
+  // Tells the preview page of the bounds of the omnibox popup (in screen
   // coordinates). This is used by the page to offset the results to avoid them
   // being covered by the omnibox dropdown.
-  void SetOmniboxBounds(const gfx::Rect& bounds);
+  void SetPopupBounds(const gfx::Rect& bounds);
+
+  // Tells the preview page what size margins to use. Both |start| and |end|
+  // are offsets from the start edge of the page delimiting the horizontal
+  // bounds of the page text area.
+  void SetMarginSize(int start, int end);
 
   // Tells the preview page about the available autocomplete results.
   void SendAutocompleteResults(
       const std::vector<InstantAutocompleteResult>& results);
 
   // Tells the preview page that the user pressed the up or down key. |count|
   // is a repeat count, negative for moving up, positive for moving down.
   void OnUpOrDownKeyPressed(int count);
 
   // Tells the preview page that the searchbox has been focused.
@@ skipping 72 matching lines @@
   // Used to get notifications about renderers coming and going.
   content::NotificationRegistrar registrar_;
 
   // See comments on the getter above.
   history::HistoryAddPageArgs last_navigation_;
 
   DISALLOW_COPY_AND_ASSIGN(InstantLoader);
 };
 
 #endif  // CHROME_BROWSER_INSTANT_INSTANT_LOADER_H_