Remove dependencies on extensions from content/browser/debugger.

content/browser/debugger/devtools_manager.cc

 // Copyright (c) 2011 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.
 
 #include "content/browser/debugger/devtools_manager.h"
 
 #include <vector>
 
 #include "base/auto_reset.h"
 #include "base/message_loop.h"
@@ skipping 353 matching lines @@
 }
 
 void DevToolsManager::ToggleDevToolsWindow(
     RenderViewHost* inspected_rvh,
     bool force_open,
     DevToolsToggleAction action) {
   bool do_open = force_open;
   DevToolsClientHost* host = GetDevToolsClientHostFor(inspected_rvh);
 
   if (host != NULL && host->AsDevToolsWindow() == NULL) {
-    // Break remote debugging / extension debugging session.
+    // Break remote debugging session.
     UnregisterDevToolsClientHostFor(inspected_rvh);
     host = NULL;
   }
 
   if (!host) {
     bool docked = inspected_rvh->process()->profile()->GetPrefs()->
         GetBoolean(prefs::kDevToolsOpenDocked);
     host = new DevToolsWindow(
         inspected_rvh->site_instance()->browsing_instance()->profile(),
         inspected_rvh,
@@ skipping 72 matching lines @@
   for (InspectedRvhToClientHostMap::iterator it =
            inspected_rvh_to_client_host_.begin();
        it != inspected_rvh_to_client_host_.end(); ++it) {
     rhvs.push_back(it->first);
   }
   for (std::vector<RenderViewHost*>::iterator it = rhvs.begin();
        it != rhvs.end(); ++it) {
     UnregisterDevToolsClientHostFor(*it);
   }
 }