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 0db416e8335e3d5da9c18532141007ebd13fce5f..5ee75d0ceb9c0b696eba025208ce665391ff7164 100644
--- a/content/common/devtools_messages.h
+++ b/content/common/devtools_messages.h
@@ -117,6 +117,10 @@ IPC_MESSAGE_ROUTED0(DevToolsHostMsg_ClearBrowserCache)
 // Clears browser cookies.
 IPC_MESSAGE_ROUTED0(DevToolsHostMsg_ClearBrowserCookies)
 
+// Disables / reenables network.
+IPC_MESSAGE_ROUTED1(DevToolsHostMsg_DisableNetwork,

[pfeldman, 2014/04/23 13:00:28]

This one (and the two above), should not be initiated by the renderer.
Otherwise, breaking into the renderer can disable browser network. You should
intercept them on the browser level instead (see RendererOverridesHandler).

[eustas, 2014/04/29 08:14:42]

Done.

+                    bool /* disable */)
+
 //-----------------------------------------------------------------------------
 // These are messages sent from the GPU process to the inspected renderer.