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

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

Index: third_party/WebKit/Source/core/loader/MixedContentChecker.cpp
diff --git a/third_party/WebKit/Source/core/loader/MixedContentChecker.cpp b/third_party/WebKit/Source/core/loader/MixedContentChecker.cpp
index 51dfb21fc44a42e3c0a98e64b2da0780c1ed4dd3..d36172f5edefea929dd3782a8b803eb300a4f329 100644
--- a/third_party/WebKit/Source/core/loader/MixedContentChecker.cpp
+++ b/third_party/WebKit/Source/core/loader/MixedContentChecker.cpp
@@ -294,6 +294,13 @@ bool MixedContentChecker::shouldBlockFetch(
     ResourceRequest::RedirectStatus redirectStatus,
     const KURL& url,
     MixedContentChecker::ReportingStatus reportingStatus) {
+  // Frame-level loads are checked by the browser if PlzNavigate is enabled. No
+  // need to check them again here.
+  if (frame->settings()->getBrowserSideNavigationEnabled() &&
+      frameType != WebURLRequest::FrameTypeNone) {
+    return false;
+  }
+
   Frame* effectiveFrame = effectiveFrameForFrameType(frame, frameType);
   Frame* mixedFrame =
       inWhichFrameIsContentMixed(effectiveFrame, frameType, url);
@@ -563,6 +570,26 @@ void MixedContentChecker::handleCertificateError(
   }
 }
 
+// static
+void MixedContentChecker::mixedContentFoundByTheBrowser(
+    LocalFrame* frame,
+    const KURL& mainResourceUrl,
+    const KURL& mixedContentUrl,
+    WebURLRequest::RequestContext requestContext,
+    bool wasAllowed,
+    bool hadRedirect) {
+  logToConsoleAboutFetch(frame, mainResourceUrl, mixedContentUrl,
+                         requestContext, wasAllowed);
+  ContentSecurityPolicy* policy =
+      frame->securityContext()->contentSecurityPolicy();
+  if (policy) {
+    policy->reportMixedContent(
+        mixedContentUrl, hadRedirect
+                             ? ResourceRequest::RedirectStatus::FollowedRedirect
+                             : ResourceRequest::RedirectStatus::NoRedirect);
+  }
+}
+
 WebMixedContentContextType MixedContentChecker::contextTypeForInspector(
     LocalFrame* frame,
     const ResourceRequest& request) {