[content shell] Use the TestRunner library again and remove the mock testRunner

content/shell/shell_render_process_observer.h

Index: content/shell/shell_render_process_observer.h
diff --git a/content/shell/shell_render_process_observer.h b/content/shell/shell_render_process_observer.h
index 4a487e0494a0140ef5d8a7d9483229485fbc4b20..14914ffb2dd31019121784dbdf9ea9cbf2058cc3 100644
--- a/content/shell/shell_render_process_observer.h
+++ b/content/shell/shell_render_process_observer.h
@@ -17,6 +17,7 @@ class WebFrame;
 
 namespace WebTestRunner {
 class WebTestDelegate;
+class WebTestInterfaces;
 }
 
 namespace content {
@@ -43,6 +44,9 @@ class ShellRenderProcessObserver : public RenderProcessObserver {
   WebTestRunner::WebTestDelegate* test_delegate() const {
     return test_delegate_;
   }
+  WebTestRunner::WebTestInterfaces* test_interfaces() const {
+    return test_interfaces_.get();
+  }
   WebKitTestRunner* main_test_runner() const { return main_test_runner_; }
   const base::FilePath& webkit_source_dir() const { return webkit_source_dir_; }
 
@@ -54,6 +58,7 @@ class ShellRenderProcessObserver : public RenderProcessObserver {
   RenderView* main_render_view_;
   WebKitTestRunner* main_test_runner_;
   WebTestRunner::WebTestDelegate* test_delegate_;
+  scoped_ptr<WebTestRunner::WebTestInterfaces> test_interfaces_;
 
   base::FilePath webkit_source_dir_;