Convert PluginContentOriginWhitelist to use the new navigation callbacks.

content/browser/plugin_content_origin_whitelist.h

Index: content/browser/plugin_content_origin_whitelist.h
diff --git a/content/browser/plugin_content_origin_whitelist.h b/content/browser/plugin_content_origin_whitelist.h
index fbeab39564729e76ef153243e611d3b0918f4972..f6f17e865f436cb53830e356c94b2c4ad62bea22 100644
--- a/content/browser/plugin_content_origin_whitelist.h
+++ b/content/browser/plugin_content_origin_whitelist.h
@@ -36,9 +36,7 @@ class PluginContentOriginWhitelist : public WebContentsObserver {
   void RenderFrameCreated(RenderFrameHost* render_frame_host) override;
   bool OnMessageReceived(const IPC::Message& message,
                          RenderFrameHost* render_frame_host) override;
-  void DidNavigateMainFrame(
-      const LoadCommittedDetails& details,
-      const FrameNavigateParams& params) override;
+  void DidFinishNavigation(NavigationHandle* navigation_handle) override;
 
   void OnPluginContentOriginAllowed(const url::Origin& content_origin);