Implement unregisterProtocolHandler() for content layer

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index 728b454e9d45003f565d4a16d06b24ab878c12ea..ee358749597d224dfd63a681676c31317d3a080f 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -534,6 +534,8 @@ bool WebContentsImpl::OnMessageReceived(RenderViewHost* render_view_host,
     IPC_MESSAGE_HANDLER(ViewHostMsg_EnumerateDirectory, OnEnumerateDirectory)
     IPC_MESSAGE_HANDLER(ViewHostMsg_RegisterProtocolHandler,
                         OnRegisterProtocolHandler)
+    IPC_MESSAGE_HANDLER(ViewHostMsg_UnregisterProtocolHandler,
+                        OnUnregisterProtocolHandler)
     IPC_MESSAGE_HANDLER(ViewHostMsg_Find_Reply, OnFindReply)
     IPC_MESSAGE_HANDLER(ViewHostMsg_AppCacheAccessed, OnAppCacheAccessed)
     IPC_MESSAGE_HANDLER(ViewHostMsg_WebUISend, OnWebUISend)
@@ -2757,6 +2759,20 @@ void WebContentsImpl::OnRegisterProtocolHandler(const std::string& protocol,
   delegate_->RegisterProtocolHandler(this, protocol, url, user_gesture);
 }
 
+void WebContentsImpl::OnUnregisterProtocolHandler(const std::string& protocol,
+                                                  const GURL& url,
+                                                  bool user_gesture) {
+  if (!delegate_)
+    return;
+
+  ChildProcessSecurityPolicyImpl* policy =

[jochen (gone - plz use gerrit), 2014/07/09 09:12:56]

please clang-format this

[gyuyoung-inactive, 2014/07/09 09:32:16]

Done.

+  ChildProcessSecurityPolicyImpl::GetInstance();
+  if (policy->IsPseudoScheme(protocol))
+    return;
+
+  delegate_->UnregisterProtocolHandler(this, protocol, url, user_gesture);
+}
+
 void WebContentsImpl::OnFindReply(int request_id,
                                   int number_of_matches,
                                   const gfx::Rect& selection_rect,