PlzNavigate: Move navigation-level mixed content checks to the browser.

third_party/WebKit/Source/web/WebLocalFrameImpl.h

Index: third_party/WebKit/Source/web/WebLocalFrameImpl.h
diff --git a/third_party/WebKit/Source/web/WebLocalFrameImpl.h b/third_party/WebKit/Source/web/WebLocalFrameImpl.h
index cd22c63aa26b6f529db382d7932677f4d6b4ae2b..df7f47bcdb61f49aa385c6de6e3356a01a2df17c 100644
--- a/third_party/WebKit/Source/web/WebLocalFrameImpl.h
+++ b/third_party/WebKit/Source/web/WebLocalFrameImpl.h
@@ -259,6 +259,10 @@ class WEB_EXPORT WebLocalFrameImpl final
                 const WebHistoryItem&,
                 WebHistoryLoadType,
                 bool isClientRedirect) override;
+  void mixedContentUpdateFromBrowser(const std::set<int>& features,
+                                     bool mixedContentWasFound,
+                                     const WebURL& mixedContentUrl,
+                                     bool mixedContentHadRedirect) override;
   bool maybeRenderFallbackContent(const WebURLError&) const override;
   bool isLoading() const override;
   bool isNavigationScheduledWithin(double interval) const override;