Remove unused param from search engine extension override helper function.

chrome/browser/extensions/settings_api_helpers.h

Index: chrome/browser/extensions/settings_api_helpers.h
diff --git a/chrome/browser/extensions/settings_api_helpers.h b/chrome/browser/extensions/settings_api_helpers.h
index 866fbb14997dfcdae23052a55e2deac57f8d7b5b..647782d16547e830db11ab6cf35268a0618dce88 100644
--- a/chrome/browser/extensions/settings_api_helpers.h
+++ b/chrome/browser/extensions/settings_api_helpers.h
@@ -13,43 +13,23 @@ class BrowserContext;
 
 namespace extensions {
 
-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
-// |browser_context| or NULL if no extension is overriding the homepage.
-// |home_page_url|, if non-NULL, will contain the home_page value the extension
-// has set.
+// Returns which extension (if any) is overriding the homepage in a given
+// |browser_context|.
 const Extension* GetExtensionOverridingHomepage(
-    content::BrowserContext* browser_context,
-    GURL* home_page_url);
+    content::BrowserContext* browser_context);
 
-// Returns which extension is overriding the homepage in a given
-// |browser_context| or NULL if no extension is overriding the startup pages.
-// |startup_pages|, if non-NULL, will contain the vector of startup page URLs
-// the extension has set.
+// Returns which extension (if any) is overriding the homepage in a given
+// |browser_context|.
 const Extension* GetExtensionOverridingStartupPages(
-    content::BrowserContext* browser_context,
-    std::vector<GURL>* startup_pages);
+    content::BrowserContext* browser_context);
 
-// Returns which extension is overriding the search engine in a given
-// |browser_context| or NULL if no extension is overriding the search engine.
-// |search_provider|, if non-NULL, will contain the search provider the
-// extension has set.
+// Returns which extension (if any) is overriding the search engine in a given
+// |browser_context|.
 const Extension* GetExtensionOverridingSearchEngine(
-    content::BrowserContext* browser_context,
-    api::manifest_types::ChromeSettingsOverrides::Search_provider*
-        search_provider);
+    content::BrowserContext* browser_context);
 
-// Returns which extension is overriding the proxy in a given |browser_context|
-// or NULL if no extension is overriding the proxy.
+// Returns which extension (if any) is overriding the proxy in a given
+// |browser_context|.
 const Extension* GetExtensionOverridingProxy(
     content::BrowserContext* browser_context);