Convert PlatformVerificationDialog to use the new navigation callbacks.

chrome/browser/chromeos/attestation/platform_verification_dialog.cc

Index: chrome/browser/chromeos/attestation/platform_verification_dialog.cc
diff --git a/chrome/browser/chromeos/attestation/platform_verification_dialog.cc b/chrome/browser/chromeos/attestation/platform_verification_dialog.cc
index d35554deb2fde0750a0ade39f3e019156f33d325..a43a3b9f318fb5f80f22335b7ea455133b7dc0a8 100644
--- a/chrome/browser/chromeos/attestation/platform_verification_dialog.cc
+++ b/chrome/browser/chromeos/attestation/platform_verification_dialog.cc
@@ -16,6 +16,7 @@
 #include "chrome/grit/generated_resources.h"
 #include "components/constrained_window/constrained_window_views.h"
 #include "components/strings/grit/components_strings.h"
+#include "content/public/browser/navigation_handle.h"
 #include "content/public/browser/web_contents.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/common/extension.h"
@@ -149,9 +150,11 @@ void PlatformVerificationDialog::StyledLabelLinkClicked(
   }
 }
 
-void PlatformVerificationDialog::DidStartNavigationToPendingEntry(
-    const GURL& url,
-    content::ReloadType reload_type) {
+void PlatformVerificationDialog::DidStartNavigation(
+    content::NavigationHandle* navigation_handle) {
+  if (!navigation_handle->IsInMainFrame() || navigation_handle->IsSamePage())
+    return;
+
   views::Widget* widget = GetWidget();
   if (widget)
     widget->Close();