Add the ability for DevTools to wrap network transactions.

chrome/browser/devtools/chrome_devtools_manager_delegate.h

Index: chrome/browser/devtools/chrome_devtools_manager_delegate.h
diff --git a/chrome/browser/devtools/chrome_devtools_manager_delegate.h b/chrome/browser/devtools/chrome_devtools_manager_delegate.h
index 4de8369e1071528f609309e877f6151bf27d4f58..9b38332bfd1162808b940bd934c0ce4643eef64c 100644
--- a/chrome/browser/devtools/chrome_devtools_manager_delegate.h
+++ b/chrome/browser/devtools/chrome_devtools_manager_delegate.h
@@ -5,10 +5,14 @@
 #ifndef CHROME_BROWSER_DEVTOOLS_CHROME_DEVTOOLS_MANAGER_DELEGATE_H_
 #define CHROME_BROWSER_DEVTOOLS_CHROME_DEVTOOLS_MANAGER_DELEGATE_H_
 
+#include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
+#include "chrome/browser/devtools/devtools_protocol.h"
 #include "content/public/browser/devtools_manager_delegate.h"
 
+class Profile;
+
 class ChromeDevToolsManagerDelegate : public content::DevToolsManagerDelegate {
  public:
   ChromeDevToolsManagerDelegate();
@@ -22,6 +26,21 @@ class ChromeDevToolsManagerDelegate : public content::DevToolsManagerDelegate {
       base::DictionaryValue* command_dict) OVERRIDE;
 
  private:
+  base::Callback<void(content::DevToolsAgentHost*, bool)> devtools_callback_;
+  bool devtools_callback_registered_;
+  void EnsureDevtoolsCallbackRegistered();
+
+  Profile* GetProfile(content::DevToolsAgentHost* agent_host);
+
+  scoped_ptr<DevToolsProtocol::Response> EmulateNetworkConditions(
+      content::DevToolsAgentHost* agent_host,
+      DevToolsProtocol::Command* command);
+
+  void UpdateNetworkState(content::DevToolsAgentHost* agent_host, bool offline);
+
+  void OnDevToolsStateChanged(content::DevToolsAgentHost* agent_host,
+                              bool attached);
+
   DISALLOW_COPY_AND_ASSIGN(ChromeDevToolsManagerDelegate);
 };