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 0946340f43863d7b51eda2d5ce7a432136c8a61a..a3f89c6abada884f21fd9aac66f6755b458b1be8 100644
--- a/chrome/browser/tab_contents/render_view_host_delegate_helper.cc
+++ b/chrome/browser/tab_contents/render_view_host_delegate_helper.cc
@@ -102,7 +102,8 @@ RenderViewHostDelegateViewHelper::MaybeCreateBackgroundContents(
   // permission as that is checked in RenderMessageFilter when the CreateWindow
   // message is processed.
   const Extension* extension =
-      extensions_service->GetExtensionByWebExtent(opener_url);
+      extensions_service->extensions()->GetHostedAppByURL(
+          ExtensionURLInfo(opener_url));
   if (!extension)
     return NULL;
 
@@ -551,8 +552,8 @@ WebPreferences RenderViewHostDelegateHelper::GetWebkitPrefs(
 
   ExtensionService* service = profile->GetExtensionService();
   if (service) {
-    const Extension* extension =
-        service->GetExtensionByURL(rvh->site_instance()->site());
+    const Extension* extension = service->extensions()->GetByID(
+        rvh->site_instance()->site().host());
     extension_webkit_preferences::SetPreferences(
         extension, rvh->delegate()->GetRenderViewType(), &web_prefs);
   }