Add the ability for DevTools to wrap network transactions.

content/browser/devtools/render_view_devtools_agent_host.cc

Index: content/browser/devtools/render_view_devtools_agent_host.cc
diff --git a/content/browser/devtools/render_view_devtools_agent_host.cc b/content/browser/devtools/render_view_devtools_agent_host.cc
index c9d8634466364dbfa2ca3a8cc288c9a1893df0aa..17baca0d2d446683e850e3b4f30ec3ce6b3eab0d 100644
--- a/content/browser/devtools/render_view_devtools_agent_host.cc
+++ b/content/browser/devtools/render_view_devtools_agent_host.cc
@@ -165,7 +165,8 @@ RenderViewDevToolsAgentHost::RenderViewDevToolsAgentHost(
     : render_view_host_(NULL),
       overrides_handler_(new RendererOverridesHandler(this)),
       tracing_handler_(new DevToolsTracingHandler()),
-      power_handler_(new DevToolsPowerHandler())
+      power_handler_(new DevToolsPowerHandler()),
+      network_disabled_(false)
  {
   SetRenderViewHost(rvh);
   DevToolsProtocol::Notifier notifier(base::Bind(
@@ -223,6 +224,8 @@ void RenderViewDevToolsAgentHost::OnClientAttached() {
   // extensions::ProcessManager no longer relies on this notification.
   DevToolsManagerImpl::GetInstance()->NotifyObservers(this, true);
 
+  UpdateNetworkState(network_disabled_);
+
 #if defined(OS_ANDROID)
   power_save_blocker_.reset(
       static_cast<PowerSaveBlockerImpl*>(
@@ -240,6 +243,8 @@ void RenderViewDevToolsAgentHost::OnClientDetached() {
 #if defined(OS_ANDROID)
   power_save_blocker_.reset();
 #endif
+  UpdateNetworkState(false);
+
   overrides_handler_->OnClientDetached();
   ClientDetachedFromRenderer();
 }
@@ -405,6 +410,8 @@ bool RenderViewDevToolsAgentHost::DispatchIPCMessage(
     IPC_MESSAGE_HANDLER(DevToolsHostMsg_ClearBrowserCache, OnClearBrowserCache)
     IPC_MESSAGE_HANDLER(DevToolsHostMsg_ClearBrowserCookies,
                         OnClearBrowserCookies)
+    IPC_MESSAGE_HANDLER(DevToolsHostMsg_DisableNetwork,
+                        OnDisableNetwork)
     IPC_MESSAGE_HANDLER_GENERIC(ViewHostMsg_SwapCompositorFrame,
                                 handled = false; OnSwapCompositorFrame(msg))
     IPC_MESSAGE_UNHANDLED(handled = false)
@@ -452,4 +459,17 @@ void RenderViewDevToolsAgentHost::OnClearBrowserCookies() {
     GetContentClient()->browser()->ClearCookies(render_view_host_);
 }
 
+void RenderViewDevToolsAgentHost::UpdateNetworkState(bool disable_network) {
+  if (render_view_host_) {
+    GetContentClient()->browser()->DisableNetwork(
+        render_view_host_, GetId(), disable_network);
+  }
+}
+
+void RenderViewDevToolsAgentHost::OnDisableNetwork(
+  bool disable_network) {
+  network_disabled_ = disable_network;
+  UpdateNetworkState(disable_network);
+}
+
 }  // namespace content