[content shell] add support for a testRunner.setXSSAuditorEnabled

content/shell/webkit_test_runner_host.h

Index: content/shell/webkit_test_runner_host.h
diff --git a/content/shell/webkit_test_runner_host.h b/content/shell/webkit_test_runner_host.h
index ea09ec2f657ccb63759e735d12136df75a9f8ebc..596a910dbd6bbf5d655f0086e3767e90fed75e52 100644
--- a/content/shell/webkit_test_runner_host.h
+++ b/content/shell/webkit_test_runner_host.h
@@ -13,6 +13,7 @@
 #include "base/threading/non_thread_safe.h"
 #include "content/public/browser/render_view_host_observer.h"
 #include "content/public/browser/web_contents_observer.h"
+#include "content/shell/shell_webpreferences.h"
 
 class SkBitmap;
 
@@ -84,6 +85,7 @@ class WebKitTestController : public base::NonThreadSafe,
   void set_printer(WebKitTestResultPrinter* printer) {
     printer_.reset(printer);
   }
+  const ShellWebPreferences& web_preferences() const { return prefs_; }
 
   // Interface for WebKitTestRunnerHost.
   void NotifyDone();
@@ -126,6 +128,7 @@ class WebKitTestController : public base::NonThreadSafe,
   void OnImageDump(const std::string& actual_pixel_hash, const SkBitmap& image);
   void OnTextDump(const std::string& dump);
   void OnPrintMessage(const std::string& message);
+  void OnOverridePreferences(const ShellWebPreferences& prefs);
 
   scoped_ptr<WebKitTestResultPrinter> printer_;
 
@@ -143,6 +146,7 @@ class WebKitTestController : public base::NonThreadSafe,
   bool is_printing_;
   bool should_stay_on_page_after_handling_before_unload_;
   bool wait_until_done_;
+  ShellWebPreferences prefs_;
 
   base::CancelableClosure watchdog_;