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

third_party/WebKit/Source/core/loader/MixedContentChecker.h

Index: third_party/WebKit/Source/core/loader/MixedContentChecker.h
diff --git a/third_party/WebKit/Source/core/loader/MixedContentChecker.h b/third_party/WebKit/Source/core/loader/MixedContentChecker.h
index 33e8a1a82f912cf420a7de0e7aa3d51d85ed4f20..7aca72fdab9c65c8ae594b98cac4629d95808d8d 100644
--- a/third_party/WebKit/Source/core/loader/MixedContentChecker.h
+++ b/third_party/WebKit/Source/core/loader/MixedContentChecker.h
@@ -47,6 +47,14 @@ class KURL;
 class ResourceResponse;
 class SecurityOrigin;
 
+// Checks resource loads for mixed content. If PlzNavigate is enabled then this
+// class only checks for sub-resource loads while frame-level loads are
+// delegated to the browser where they are checked by
+// MixedContentNavigationThrottle. Changes to this class might need to be
+// reflected on its browser counterpart.
+//
+// Current mixed content W3C draft that drives this implementation:
+// https://w3c.github.io/webappsec-mixed-content/
 class CORE_EXPORT MixedContentChecker final {
   WTF_MAKE_NONCOPYABLE(MixedContentChecker);
   DISALLOW_NEW();
@@ -94,6 +102,14 @@ class CORE_EXPORT MixedContentChecker final {
                                      WebURLRequest::FrameType,
                                      WebURLRequest::RequestContext);
 
+  // Receive information about mixed content found externally.
+  static void mixedContentFound(LocalFrame*,
+                                const KURL& mainResourceUrl,
+                                const KURL& mixedContentUrl,
+                                WebURLRequest::RequestContext,
+                                bool wasAllowed,
+                                bool hadRedirect);
+
  private:
   FRIEND_TEST_ALL_PREFIXES(MixedContentCheckerTest, HandleCertificateError);