Move/replace/rename URL-based extension getters from ExtensionService to/in ExtensionSet.

chrome/browser/tab_contents/render_view_host_delegate_helper.cc

Index: chrome/browser/tab_contents/render_view_host_delegate_helper.cc
diff --git a/chrome/browser/tab_contents/render_view_host_delegate_helper.cc b/chrome/browser/tab_contents/render_view_host_delegate_helper.cc
index 752fcbb16b6a00ca24a3d494e1605dbfbd954fa2..cce528fc62a1082da77f9a0255865f06ccaf4124 100644
--- a/chrome/browser/tab_contents/render_view_host_delegate_helper.cc
+++ b/chrome/browser/tab_contents/render_view_host_delegate_helper.cc
@@ -101,8 +101,8 @@ RenderViewHostDelegateViewHelper::MaybeCreateBackgroundContents(
   // can create BackgroundContents. We don't have to check for background
   // permission as that is checked in RenderMessageFilter when the CreateWindow
   // message is processed.
-  const Extension* extension =
-      extensions_service->GetExtensionByWebExtent(opener_url);
+  const Extension* extension = extensions_service->extensions()->GetByWebExtent(
+          ExtensionURLInfo(opener_url));
   if (!extension)
     return NULL;
 
@@ -548,8 +548,8 @@ WebPreferences RenderViewHostDelegateHelper::GetWebkitPrefs(
 
   ExtensionService* service = profile->GetExtensionService();
   if (service) {
-    const Extension* extension =
-        service->GetExtensionByURL(rvh->site_instance()->site());
+    const Extension* extension = service->extensions()->GetByURL(
+        ExtensionURLInfo(rvh->site_instance()->site()));
     extension_webkit_preferences::SetPreferences(
         extension, rvh->delegate()->GetRenderViewType(), &web_prefs);
   }