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

chrome/browser/instant/instant_controller.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_CONTROLLER_H_
 #define CHROME_BROWSER_INSTANT_INSTANT_CONTROLLER_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 13 matching lines @@
 #include "ui/gfx/native_widget_types.h"
 #include "ui/gfx/rect.h"
 
 struct AutocompleteMatch;
 class AutocompleteProvider;
 class InstantLoader;
 class PrefService;
 class Profile;
 class TabContents;
 class TemplateURL;
+struct ThemeBackgroundInfo;
 
 namespace chrome {
 class BrowserInstantController;
 }
 
 // InstantController maintains a WebContents that is intended to give a
 // preview of search results. InstantController is owned by Browser via
 // BrowserInstantController.
 //
 // At any time the WebContents maintained by InstantController may be hidden
@@ skipping 85 matching lines @@
   void OnAutocompleteLostFocus(gfx::NativeView view_gaining_focus);
 
   // The autocomplete edit has gained focus. Preload the Instant URL of the
   // default search engine, in anticipation of the user typing a query.
   void OnAutocompleteGotFocus();
 
   // The search mode in the active tab has changed. Pass the message down to
   // the loader which will notify the renderer.
   void OnActiveTabModeChanged(chrome::search::Mode new_mode);
 
+  // The theme has changed.  Pass the message down to the loader which will
+  // notify the renderer.
+  void OnThemeChanged(const ThemeBackgroundInfo& theme_info);

[sreeram, 2012/11/19 18:12:02]

Nit: Drop the "On". Just ThemeChanged() and "ThemeAreaHeightChanged" are clear
enough, I think.

[kuan, 2012/11/19 22:06:07]

Done.

+
+  // The theme area height has changed.  Pass the message down to the loader
+  // which will notify the renderer.
+  void OnThemeAreaHeightChanged(int height);
+
   // Returns whether the preview will be committed when the mouse or touch
   // pointer is released.
   bool commit_on_pointer_release() const;
 
   // Returns the transition type of the last AutocompleteMatch passed to Update.
   content::PageTransition last_transition_type() const {
     return last_transition_type_;
   }
 
   const InstantModel* model() const { return &model_; }
@@ skipping 135 matching lines @@
 
   // The timestamp at which query editing began. This value is used when the
   // first set of suggestions is processed and cleared when the overlay is
   // hidden.
   base::Time first_interaction_time_;
 
   DISALLOW_COPY_AND_ASSIGN(InstantController);
 };
 
 #endif  // CHROME_BROWSER_INSTANT_INSTANT_CONTROLLER_H_