Convert PlatformVerificationDialog to use the new navigation callbacks.

chrome/browser/chromeos/attestation/platform_verification_dialog.h

 // Copyright 2013 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_CHROMEOS_ATTESTATION_PLATFORM_VERIFICATION_DIALOG_H_
 #define CHROME_BROWSER_CHROMEOS_ATTESTATION_PLATFORM_VERIFICATION_DIALOG_H_
 
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/strings/string16.h"
@@ skipping 49 matching lines @@
 
   // views::View:
   gfx::Size GetPreferredSize() const override;
 
   // views::StyledLabelListener:
   void StyledLabelLinkClicked(views::StyledLabel* label,
                               const gfx::Range& range,
                               int event_flags) override;
 
   // content::WebContentsObserver:
-  void DidStartNavigationToPendingEntry(
-      const GURL& url,
-      content::ReloadType reload_type) override;
+  void DidStartNavigation(
+      content::NavigationHandle* navigation_handle) override;
 
   base::string16 domain_;
   ConsentCallback callback_;
 
   DISALLOW_COPY_AND_ASSIGN(PlatformVerificationDialog);
 };
 
 }  // namespace attestation
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_ATTESTATION_PLATFORM_VERIFICATION_DIALOG_H_