Remove unused param from search engine extension override helper function.

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_EXTENSIONS_SETTINGS_API_HELPERS_H_
 #define CHROME_BROWSER_EXTENSIONS_SETTINGS_API_HELPERS_H_
 
 #include "chrome/common/extensions/manifest_handlers/settings_overrides_handler.h"
 
 namespace content {
@@ skipping 15 matching lines @@
 // Returns which extension is overriding the homepage in a given
 // |browser_context|. |home_page_url|, if non-NULL, will contain the home_page
 // value the extension has set.
 const Extension* OverridesHomepage(content::BrowserContext* browser_context,
                                    GURL* home_page_url);
 
 // Returns which extension is overriding the homepage in a given
 // |browser_context|. |startup_pages|, if non-NULL, will contain the vector of
 // startup page URLs the extension has set.
 const Extension* OverridesStartupPages(content::BrowserContext* browser_context,
                                        std::vector<GURL>* startup_pages);

[Devlin, 2014/06/03 23:16:58]

it looks like these other ones (|home_page_url| in OverridesHomepage() and
|startup_pages| in OverridesStartupPages()) are just as unused... Do you plan to
remove them at later, are they going to be used soon, or should they also be
pulled out in this patch?

 
 // 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.
+// |browser_context|.
 const Extension* OverridesSearchEngine(
-    content::BrowserContext* browser_context,
-    api::manifest_types::ChromeSettingsOverrides::Search_provider*
-        search_provider);
+    content::BrowserContext* browser_context);
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_SETTINGS_API_HELPERS_H_