Replicate Content-Security-Policy into remote frame proxies.

third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp

Index: third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp
diff --git a/third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp b/third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp
index 1743ea5afd355906c6c56ec478292bd55b6ad62f..4deb1bd1b542aa68c79317183f9a56edd8d63233 100644
--- a/third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp
+++ b/third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp
@@ -936,6 +936,19 @@ void FrameLoaderClientImpl::didChangeSandboxFlags(Frame* childFrame, SandboxFlag
     m_webFrame->client()->didChangeSandboxFlags(WebFrame::fromFrame(childFrame), static_cast<WebSandboxFlags>(flags));
 }
 
+void FrameLoaderClientImpl::didAddContentSecurityPolicy(
+    const String& headerValue,
+    ContentSecurityPolicyHeaderType type,
+    ContentSecurityPolicyHeaderSource source)
+{
+    if (m_webFrame->client()) {
+        m_webFrame->client()->didAddContentSecurityPolicy(
+            headerValue,
+            static_cast<WebContentSecurityPolicyType>(type),
+            static_cast<WebContentSecurityPolicySource>(source));
+    }
+}
+
 void FrameLoaderClientImpl::didChangeFrameOwnerProperties(HTMLFrameElementBase* frameElement)
 {
     if (!m_webFrame->client())