Don't autofill credit cards on non-secure pages

chrome/browser/ui/autofill/chrome_autofill_client.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_AUTOFILL_CHROME_AUTOFILL_CLIENT_H_
 #define CHROME_BROWSER_UI_AUTOFILL_CHROME_AUTOFILL_CLIENT_H_
 
 #include <vector>
 
 #include "base/callback.h"
@@ skipping 61 matching lines @@
       const std::vector<base::string16>& labels) override;
   void HideAutofillPopup() override;
   bool IsAutocompleteEnabled() override;
   void PropagateAutofillPredictions(
       content::RenderFrameHost* rfh,
       const std::vector<autofill::FormStructure*>& forms) override;
   void DidFillOrPreviewField(const base::string16& autofilled_value,
                              const base::string16& profile_full_name) override;
   void OnFirstUserGestureObserved() override;
   void LinkClicked(const GURL& url, WindowOpenDisposition disposition) override;
+  bool IsContextSecure(const GURL& form_origin) override;
 
   // content::WebContentsObserver implementation.
   void RenderFrameDeleted(content::RenderFrameHost* rfh) override;
   void DidNavigateAnyFrame(
       content::RenderFrameHost* render_frame_host,
       const content::LoadCommittedDetails& details,
       const content::FrameNavigateParams& params) override;
   void MainFrameWasResized(bool width_changed) override;
   void WebContentsDestroyed() override;
 
@@ skipping 43 matching lines @@
 
   // The identity provider, used for Wallet integration.
   scoped_ptr<IdentityProvider> identity_provider_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeAutofillClient);
 };
 
 }  // namespace autofill
 
 #endif  // CHROME_BROWSER_UI_AUTOFILL_CHROME_AUTOFILL_CLIENT_H_