Add option --dump-render-tree to content_shell to dump the render tree as text.

content/shell/shell.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.
 
 #ifndef CONTENT_SHELL_SHELL_H_
 #define CONTENT_SHELL_SHELL_H_
 
 #pragma once
 
 #include <vector>
@@ skipping 23 matching lines @@
 class Shell : public WebContentsDelegate {
  public:
   virtual ~Shell();
 
   void LoadURL(const GURL& url);
   void GoBackOrForward(int offset);
   void Reload();
   void Stop();
   void UpdateNavigationControls();
 
+  void SetDumpAsText(bool dump_as_text);
+
   // Do one time initialization at application startup.
   static void PlatformInitialize();
 
   // This is called indirectly by the modules that need access resources.
   static base::StringPiece PlatformResourceProvider(int key);
 
   static Shell* CreateNewWindow(content::BrowserContext* browser_context,
                                 const GURL& url,
                                 SiteInstance* site_instance,
                                 int routing_id,
@@ skipping 38 matching lines @@
   void PlatformEnableUIControl(UIControl control, bool is_enabled);
   // Updates the url in the url bar.
   void PlatformSetAddressBarURL(const GURL& url);
   // Sets whether the spinner is spinning.
   void PlatformSetIsLoading(bool loading);
 
   gfx::NativeView GetContentView();
 
   // content::WebContentsDelegate
   virtual void LoadingStateChanged(WebContents* source) OVERRIDE;
+  virtual void DidFinishLoad(WebContents* source) OVERRIDE;
   virtual void WebContentsCreated(WebContents* source_contents,
                                   int64 source_frame_id,
                                   const GURL& target_url,
                                   WebContents* new_contents) OVERRIDE;
   virtual void DidNavigateMainFramePostCommit(WebContents* tab) OVERRIDE;
   virtual void UpdatePreferredSize(WebContents* source,
                                    const gfx::Size& pref_size) OVERRIDE;
 
 #if defined(OS_WIN)
   static ATOM RegisterWindowClass();
@@ skipping 32 matching lines @@
   GtkWidget* spinner_;
   GtkToolItem* spinner_item_;
 
   int content_width_;
   int content_height_;
 #endif
 
   // A container of all the open windows. We use a vector so we can keep track
   // of ordering.
   static std::vector<Shell*> windows_;
+
+  // True if we should dump the page as text once it finished loading.
+  bool dump_as_text_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_SHELL_H_