Add explicit base to FilePath.

content/shell/webkit_test_runner.h

Index: content/shell/webkit_test_runner.h
diff --git a/content/shell/webkit_test_runner.h b/content/shell/webkit_test_runner.h
index 4d891eb4b2be88c68d9c0d1f3d64267c1fdfa564..e394a1c144ee3d0490696b14ce78165035d3dcb4 100644
--- a/content/shell/webkit_test_runner.h
+++ b/content/shell/webkit_test_runner.h
@@ -102,7 +102,8 @@ class WebKitTestRunner : public RenderViewObserver,
   // Message handlers.
   void OnCaptureTextDump(bool as_text, bool printing, bool recursive);
   void OnCaptureImageDump(const std::string& expected_pixel_hash);
-  void OnSetCurrentWorkingDirectory(const FilePath& current_working_directory);
+  void OnSetCurrentWorkingDirectory(
+      const base::FilePath& current_working_directory);
 
   SkCanvas* GetCanvas();
   void PaintRect(const WebKit::WebRect& rect);
@@ -111,7 +112,7 @@ class WebKitTestRunner : public RenderViewObserver,
 
   scoped_ptr<SkCanvas> canvas_;
   scoped_ptr<WebKit::WebContextMenuData> last_context_menu_data_;
-  FilePath current_working_directory_;
+  base::FilePath current_working_directory_;
 
   ::WebTestRunner::WebTestProxyBase* proxy_;