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

content/shell/shell_browser_main.h

 // 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.
 
 #ifndef CONTENT_SHELL_SHELL_BROWSER_MAIN_H_
 #define CONTENT_SHELL_SHELL_BROWSER_MAIN_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 28 matching lines @@
   virtual void PostMainMessageLoopRun() OVERRIDE;
   virtual void PostDestroyThreads() OVERRIDE {}
 
   ui::Clipboard* GetClipboard();
 
  private:
   scoped_ptr<ShellBrowserContext> browser_context_;
 
   scoped_ptr<ui::Clipboard> clipboard_;
 
+  bool dump_as_text_;

[jam, 2012/01/26 18:47:34]

do we really need a member variable for this, instead of having whoever cares
check the command line?

[jochen (gone - plz use gerrit), 2012/01/27 08:49:56]

Done.

+
   DISALLOW_COPY_AND_ASSIGN(ShellBrowserMainParts);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_SHELL_BROWSER_MAIN_H_