Plumb document's strict mixed content checking for RemoteFrames

content/browser/frame_host/render_frame_host_impl.cc

Index: content/browser/frame_host/render_frame_host_impl.cc
diff --git a/content/browser/frame_host/render_frame_host_impl.cc b/content/browser/frame_host/render_frame_host_impl.cc
index 18a88eb441030f40bbeb1fb55ee33ec8085b8d4f..446b18641f3b3f2b2fdfee62b40f822d18e5113b 100644
--- a/content/browser/frame_host/render_frame_host_impl.cc
+++ b/content/browser/frame_host/render_frame_host_impl.cc
@@ -517,6 +517,8 @@ bool RenderFrameHostImpl::OnMessageReceived(const IPC::Message &msg) {
                         OnDidAccessInitialDocument)
     IPC_MESSAGE_HANDLER(FrameHostMsg_DidChangeOpener, OnDidChangeOpener)
     IPC_MESSAGE_HANDLER(FrameHostMsg_DidChangeName, OnDidChangeName)
+    IPC_MESSAGE_HANDLER(FrameHostMsg_EnforceStrictMixedContentChecking,
+                        OnEnforceStrictMixedContentChecking)
     IPC_MESSAGE_HANDLER(FrameHostMsg_DidAssignPageId, OnDidAssignPageId)
     IPC_MESSAGE_HANDLER(FrameHostMsg_DidChangeSandboxFlags,
                         OnDidChangeSandboxFlags)
@@ -1392,6 +1394,10 @@ void RenderFrameHostImpl::OnDidChangeName(const std::string& name) {
   delegate_->DidChangeName(this, name);
 }
 
+void RenderFrameHostImpl::OnEnforceStrictMixedContentChecking() {
+  frame_tree_node()->SetEnforceStrictMixedContentChecking(true);
+}
+
 void RenderFrameHostImpl::OnDidAssignPageId(int32 page_id) {
   // Update the RVH's current page ID so that future IPCs from the renderer
   // correspond to the new page.