Show extension tabs in task manager and correctly label apps.

BUG=31526
BUG=60840
TEST=TaskManagerBrowserTest.NoticeExtensionTabs
TEST=TaskManagerBrowserTest.NoticeAppTabs

Review URL: http://codereview.chromium.org/5526002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@68324 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/extensions/extensions_service.cc b/chrome/browser/extensions/extensions_service.cc
index c2742a7..9cbe927 100644
--- a/chrome/browser/extensions/extensions_service.cc
+++ b/chrome/browser/extensions/extensions_service.cc
@@ -524,6 +524,16 @@
                          false);  // case_sensitive
 }
 
+bool ExtensionsService::IsInstalledApp(const GURL& url) {
+  // Check for hosted app.
+  if (GetExtensionByWebExtent(url) != NULL)
+    return true;
+
+  // Check for packaged app.
+  const Extension* extension = GetExtensionByURL(url);
+  return extension != NULL && extension->is_app();
+}
+
 // static
 bool ExtensionsService::UninstallExtensionHelper(
     ExtensionsService* extensions_service,