Propagate inert state to OOPIFs when a modal dialog is active

third_party/WebKit/Source/core/frame/RemoteFrame.cpp

Index: third_party/WebKit/Source/core/frame/RemoteFrame.cpp
diff --git a/third_party/WebKit/Source/core/frame/RemoteFrame.cpp b/third_party/WebKit/Source/core/frame/RemoteFrame.cpp
index ad1b727e0702f82e8f5f18dfdf36a2858c921183..6fdfbd3871d54084cd9101cbbf571aa8e78814f1 100644
--- a/third_party/WebKit/Source/core/frame/RemoteFrame.cpp
+++ b/third_party/WebKit/Source/core/frame/RemoteFrame.cpp
@@ -31,6 +31,7 @@ inline RemoteFrame::RemoteFrame(RemoteFrameClient* client,
     : Frame(client, page, owner, RemoteWindowProxyManager::Create(*this)),
       security_context_(RemoteSecurityContext::Create()) {
   dom_window_ = RemoteDOMWindow::Create(*this);
+  UpdateInertIfPossible();
 }
 
 RemoteFrame* RemoteFrame::Create(RemoteFrameClient* client,
@@ -121,6 +122,12 @@ bool RemoteFrame::ShouldClose() {
   return true;
 }
 
+void RemoteFrame::SetIsInert(bool inert) {
+  if (inert != is_inert_)
+    Client()->SetIsInert(inert);
+  is_inert_ = inert;
+}
+
 void RemoteFrame::SetView(RemoteFrameView* view) {
   // Oilpan: as RemoteFrameView performs no finalization actions,
   // no explicit Dispose() of it needed here. (cf. LocalFrameView::Dispose().)