Implement NavigationThrottle::BLOCK_REQUEST_AND_COLLAPSE.

content/renderer/render_frame_proxy.cc

Index: content/renderer/render_frame_proxy.cc
diff --git a/content/renderer/render_frame_proxy.cc b/content/renderer/render_frame_proxy.cc
index c318049c1f89c7c6f40b79cc9dbc23d5a120cc0e..6b8b429b0dd5f7a36612ed284da2b1d0e5dd09c4 100644
--- a/content/renderer/render_frame_proxy.cc
+++ b/content/renderer/render_frame_proxy.cc
@@ -288,6 +288,7 @@ bool RenderFrameProxy::OnMessageReceived(const IPC::Message& msg) {
     IPC_MESSAGE_HANDLER(FrameMsg_DidStopLoading, OnDidStopLoading)
     IPC_MESSAGE_HANDLER(FrameMsg_DidUpdateSandboxFlags, OnDidUpdateSandboxFlags)
     IPC_MESSAGE_HANDLER(FrameMsg_DispatchLoad, OnDispatchLoad)
+    IPC_MESSAGE_HANDLER(FrameMsg_CollapseFrameOwner, OnCollapseFrameOwner)
     IPC_MESSAGE_HANDLER(FrameMsg_DidUpdateName, OnDidUpdateName)
     IPC_MESSAGE_HANDLER(FrameMsg_AddContentSecurityPolicy,
                         OnAddContentSecurityPolicy)
@@ -359,6 +360,10 @@ void RenderFrameProxy::OnDispatchLoad() {
   web_frame_->dispatchLoadEventOnFrameOwner();
 }
 
+void RenderFrameProxy::OnCollapseFrameOwner(bool collapsed) {
+  web_frame_->collapseFrameOwner(collapsed);
+}
+
 void RenderFrameProxy::OnDidUpdateName(const std::string& name,
                                        const std::string& unique_name) {
   web_frame_->setReplicatedName(blink::WebString::fromUTF8(name),