Add the ability for DevTools to wrap network transactions.

content/common/devtools_messages.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Developer tools consist of the following parts:
 //
 // DevToolsAgent lives in the renderer of an inspected page and provides access
 // to the pages resources, DOM, v8 etc. by means of IPC messages.
 //
 // DevToolsClient is a thin delegate that lives in the tools front-end
@@ skipping 99 matching lines @@
 // cross-navigation instrumentation.
 IPC_MESSAGE_ROUTED1(DevToolsHostMsg_SaveAgentRuntimeState,
                     std::string /* state */)
 
 // Clears browser cache.
 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.
 
 IPC_STRUCT_BEGIN(GpuTaskInfo)
   IPC_STRUCT_MEMBER(double, timestamp)
   IPC_STRUCT_MEMBER(int, phase)
   IPC_STRUCT_MEMBER(bool, foreign)
   IPC_STRUCT_MEMBER(uint64, gpu_memory_used_bytes)
   IPC_STRUCT_MEMBER(uint64, gpu_memory_limit_bytes)
 IPC_STRUCT_END()
 
 // Recorded events are passed in chunks to the renderer process.
 IPC_MESSAGE_ROUTED1(DevToolsAgentMsg_GpuTasksChunk,
                     std::vector<GpuTaskInfo> /* gpu_tasks */)
 
 //-----------------------------------------------------------------------------
 // These are messages sent from the inspected page renderer to the worker
 // renderer.