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

content/common/origin_util.cc

Index: content/common/origin_util.cc
diff --git a/content/common/origin_util.cc b/content/common/origin_util.cc
index e8a348c0bedd4f630e3d395793f5c363a288260c..795e9a2bfcb3774b1d268572d51dc0981ac16200 100644
--- a/content/common/origin_util.cc
+++ b/content/common/origin_util.cc
@@ -29,9 +29,8 @@ bool IsOriginSecure(const GURL& url) {
   if (base::ContainsValue(GetSecureSchemes(), url.scheme()))
     return true;
 
-  if (base::ContainsValue(GetSecureOrigins(), url.GetOrigin())) {
+  if (IsOriginWhiteListedTrustworthy(url))
     return true;
-  }
 
   return false;
 }
@@ -47,6 +46,10 @@ bool OriginCanAccessServiceWorkers(const GURL& url) {
   return false;
 }
 
+bool IsOriginWhiteListedTrustworthy(const GURL& url) {
+  return base::ContainsValue(GetSecureOrigins(), url.GetOrigin());
+}
+
 void ResetSchemesAndOriginsWhitelistForTesting() {
   RefreshSecuritySchemesForTesting();
 }