Add unit test for the Settings API Bubble.

chrome/browser/extensions/settings_api_helpers.h

 // Copyright (c) 2014 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_UI_VIEWS_SETTINGS_API_BUBBLE_HELPER_VIEWS_H_
-#define CHROME_BROWSER_UI_VIEWS_SETTINGS_API_BUBBLE_HELPER_VIEWS_H_
+#ifndef CHROME_BROWSER_EXTENSIONS_SETTINGS_API_HELPERS_H_
+#define CHROME_BROWSER_EXTENSIONS_SETTINGS_API_HELPERS_H_
 
 #include "chrome/common/extensions/manifest_handlers/settings_overrides_handler.h"
 
-struct AutocompleteMatch;
-class Browser;
-class Profile;
-
 namespace content {
 class BrowserContext;
-class WebContents;
 }
 
 namespace extensions {
 
-// Shows a bubble notifying the user that the homepage is controlled by an
-// extension. This bubble is shown only on the first use of the Home button
-// after the controlling extension takes effect.
-void MaybeShowExtensionControlledHomeNotification(Browser* browser);
-
-// Shows a bubble notifying the user that the search engine is controlled by an
-// extension. This bubble is shown only on the first search after the
-// controlling extension takes effect.
-void MaybeShowExtensionControlledSearchNotification(
-    Profile* profile,
-    content::WebContents* web_contents,
-    const AutocompleteMatch& match);
+struct SettingsOverrides;
 
 // Find which |extension| is overriding a particular |type| of setting. Returns
 // the SettingsOverride object, or NULL if no |extension| is overriding that
 // particular setting.
 const extensions::SettingsOverrides* FindOverridingExtension(
     content::BrowserContext* browser_context,
     SettingsApiOverrideType type,
     const Extension** extension);
 
 // Returns which extension is overriding the homepage in a given
@@ skipping 11 matching lines @@
 // Returns which extension is overriding the search engine in a given
 // |browser_context|. |search_provider|, if non-NULL, will contain the search
 // provider the extension has set.
 const Extension* OverridesSearchEngine(
     content::BrowserContext* browser_context,
     api::manifest_types::ChromeSettingsOverrides::Search_provider*
         search_provider);
 
 }  // namespace extensions
 
-#endif  // CHROME_BROWSER_UI_VIEWS_SETTINGS_API_BUBBLE_HELPER_VIEWS_H_
+#endif  // CHROME_BROWSER_EXTENSIONS_SETTINGS_API_HELPERS_H_