DevTools: tell agent it has client attached early (prior to the navigation).

chrome/browser/tab_contents/web_contents.cc

 // Copyright (c) 2006-2008 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 "chrome/browser/tab_contents/web_contents.h"
 
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/file_version_info.h"
 #include "base/process_util.h"
 #include "base/string_util.h"
 #include "chrome/browser/autofill_manager.h"
 #include "chrome/browser/bookmarks/bookmark_model.h"
 #include "chrome/browser/browser.h"
 #include "chrome/browser/character_encoding.h"
+#include "chrome/browser/debugger/devtools_manager.h"
 #include "chrome/browser/dom_operation_notification_details.h"
 #include "chrome/browser/dom_ui/dom_ui.h"
 #include "chrome/browser/dom_ui/dom_ui_factory.h"
 #include "chrome/browser/download/download_manager.h"
 #include "chrome/browser/gears_integration.h"
 #include "chrome/browser/google_util.h"
 #include "chrome/browser/js_before_unload_handler.h"
 #include "chrome/browser/jsmessage_box_handler.h"
 #include "chrome/browser/load_from_memory_cache_details.h"
 #include "chrome/browser/load_notification_details.h"
@@ skipping 383 matching lines @@
   return std::wstring();
 }
 
 bool WebContents::NavigateToPendingEntry(bool reload) {
   const NavigationEntry& entry = *controller()->GetPendingEntry();
 
   RenderViewHost* dest_render_view_host = render_manager_.Navigate(entry);
   if (!dest_render_view_host)
     return false;  // Unable to create the desired render view host.
 
+  // Tell DevTools agent that it is attached prior to the navigation.
+  DevToolsManager* dev_tools_manager = g_browser_process->devtools_manager();
+  if (dev_tools_manager)  // NULL in unit tests.
+      dev_tools_manager->SendAttachToAgent(*this, dest_render_view_host);
+
   // Used for page load time metrics.
   current_load_start_ = TimeTicks::Now();
 
   // Navigate in the desired RenderViewHost.
   dest_render_view_host->NavigateToEntry(entry, reload);
 
   if (entry.page_id() == -1) {
     // HACK!!  This code suppresses javascript: URLs from being added to
     // session history, which is what we want to do for javascript: URLs that
     // do not generate content.  What we really need is a message from the
@@ skipping 1602 matching lines @@
   //    -> Use pending DOM UI if any.
   //
   //  - Normal state with no load: committed nav entry + no pending nav entry:
   //    -> Use committed DOM UI.
   if (controller()->GetPendingEntry() &&
       (controller()->GetLastCommittedEntry() ||
        render_manager_.pending_dom_ui()))
     return render_manager_.pending_dom_ui();
   return render_manager_.dom_ui();
 }