Implement upgrade-insecure-requests in browser for frame requests

content/common/content_security_policy/content_security_policy.cc

Index: content/common/content_security_policy/content_security_policy.cc
diff --git a/content/common/content_security_policy/content_security_policy.cc b/content/common/content_security_policy/content_security_policy.cc
index 299a4c2468cb3921ae60cddb40cd8d12f74bfb63..f0e93a50aba0b96ac8a13a174be709c9d0f82ba6 100644
--- a/content/common/content_security_policy/content_security_policy.cc
+++ b/content/common/content_security_policy/content_security_policy.cc
@@ -15,6 +15,7 @@ static CSPDirective::Name CSPFallback(CSPDirective::Name directive) {
   switch (directive) {
     case CSPDirective::DefaultSrc:
     case CSPDirective::FormAction:
+    case CSPDirective::UpgradeInsecureRequests:
       return CSPDirective::Unknown;
 
     case CSPDirective::FrameSrc:
@@ -186,4 +187,14 @@ std::string ContentSecurityPolicy::ToString() const {
   return text.str();
 }
 
+// static
+bool ContentSecurityPolicy::ShouldUpgradeInsecureRequest(
+    const ContentSecurityPolicy& policy) {
+  for (const CSPDirective& directive : policy.directives) {
+    if (directive.name == CSPDirective::UpgradeInsecureRequests)
+      return true;
+  }
+  return false;
+}
+
 }  // namespace content