alternate ntp: implement searchbox api for instant overlay to adopt themes

chrome/browser/instant/instant_loader.h

 // Copyright 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 <vector>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/string16.h"
 #include "chrome/browser/history/history_types.h"
 #include "chrome/browser/instant/instant_commit_type.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
 struct InstantAutocompleteResult;
 class InstantController;
 class TabContents;
+struct ThemeBackgroundInfo;
 
 namespace content {
 class WebContents;
 }
 
 namespace gfx {
 class Rect;
 }
 
 // InstantLoader is created with an "Instant URL". It loads the URL and tells
@@ skipping 27 matching lines @@
 
   // Tells the preview page of the bounds of the omnibox dropdown (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);
 
   // Tells the preview page about the available autocomplete results.
   void SendAutocompleteResults(
       const std::vector<InstantAutocompleteResult>& results);
 
+  // Tells the preview page about the current theme background.
+  void SendThemeBackgroundInfo(const ThemeBackgroundInfo& theme_info);
+
+  // Tells the preview page about the current theme area height.
+  void SendThemeAreaHeight(int height);
+
   // 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 active tab's "NTP status" has changed.
   void OnActiveTabModeChanged(bool active_tab_is_ntp);
 
   // Called by the history tab helper with the information that it would have
   // added to the history service had this web contents not been used for
   // Instant.
@@ skipping 65 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_