Change infobar creation to use a public static Create() method on the infobar delegate classes.

chrome/browser/three_d_api_observer.cc

Index: chrome/browser/three_d_api_observer.cc
===================================================================
--- chrome/browser/three_d_api_observer.cc	(revision 175396)
+++ chrome/browser/three_d_api_observer.cc	(working copy)
@@ -29,12 +29,16 @@
 
 class ThreeDAPIInfoBarDelegate : public ConfirmInfoBarDelegate {
  public:
+  // Creates a 3D API delegate and adds it to |infobar_service|.
+  static void Create(InfoBarService* infobar_service,
+                     const GURL& url,
+                     content::ThreeDAPIType requester);
+
+ private:
   ThreeDAPIInfoBarDelegate(
       InfoBarService* owner,
       const GURL& url,
       content::ThreeDAPIType requester);
-
- private:
   virtual ~ThreeDAPIInfoBarDelegate();
 
   // ConfirmInfoBarDelegate:
@@ -57,6 +61,14 @@
   DISALLOW_COPY_AND_ASSIGN(ThreeDAPIInfoBarDelegate);
 };
 
+// static
+void ThreeDAPIInfoBarDelegate::Create(InfoBarService* infobar_service,
+                                      const GURL& url,
+                                      content::ThreeDAPIType requester) {
+  infobar_service->AddInfoBar(scoped_ptr<InfoBarDelegate>(
+      new ThreeDAPIInfoBarDelegate(infobar_service, url, requester)));
+}
+
 ThreeDAPIInfoBarDelegate::ThreeDAPIInfoBarDelegate(
     InfoBarService* owner,
     const GURL& url,
@@ -157,6 +169,6 @@
 
 void ThreeDAPIObserver::DidBlock3DAPIs(const GURL& url,
                                        content::ThreeDAPIType requester) {
-  InfoBarService* service = InfoBarService::FromWebContents(web_contents());
-  service->AddInfoBar(new ThreeDAPIInfoBarDelegate(service, url, requester));
+  ThreeDAPIInfoBarDelegate::Create(
+      InfoBarService::FromWebContents(web_contents()), url, requester);
 }