Add the ability for DevTools to wrap network transactions.

content/common/devtools_messages.h

Index: content/common/devtools_messages.h
diff --git a/content/common/devtools_messages.h b/content/common/devtools_messages.h
index cd4c4b51ddf80491e1e728a71ad691680ff4b8c6..b04497625375b2311395a5cc011f342d21a73733 100644
--- a/content/common/devtools_messages.h
+++ b/content/common/devtools_messages.h
@@ -41,6 +41,7 @@
 // Multiply-included message file, no standard include guard.
 #include <map>
 #include <string>
+#include <vector>
 
 #include "content/common/content_export.h"
 #include "content/public/common/common_param_traits.h"
@@ -122,6 +123,10 @@ IPC_MESSAGE_ROUTED0(DevToolsHostMsg_ClearBrowserCache)
 // Clears browser cookies.
 IPC_MESSAGE_ROUTED0(DevToolsHostMsg_ClearBrowserCookies)
 
+// Updates list of blocked domains.
+IPC_MESSAGE_ROUTED1(DevToolsHostMsg_SetBlockedDomains,
+                    std::vector<std::string> /* blocked_domains */)
+
 //-----------------------------------------------------------------------------
 // These are messages sent from the GPU process to the inspected renderer.