Move all the layout tests that ran under browser_tests to run under content_browsertests.

content/shell/shell_browser_main_parts.h

Index: content/shell/shell_browser_main_parts.h
===================================================================
--- content/shell/shell_browser_main_parts.h	(revision 148205)
+++ content/shell/shell_browser_main_parts.h	(working copy)
@@ -35,9 +35,13 @@
   ShellDevToolsDelegate* devtools_delegate() { return devtools_delegate_; }
 
   ShellBrowserContext* browser_context() { return browser_context_.get(); }
+  ShellBrowserContext* off_the_record_browser_context() {
+    return off_the_record_browser_context_.get();
+  }
 
  private:
   scoped_ptr<ShellBrowserContext> browser_context_;
+  scoped_ptr<ShellBrowserContext> off_the_record_browser_context_;
 
   // For running content_browsertests.
   const MainFunctionParams& parameters_;