Add FilePath to base namespace.

content/public/renderer/renderer_ppapi_host.h

Index: content/public/renderer/renderer_ppapi_host.h
diff --git a/content/public/renderer/renderer_ppapi_host.h b/content/public/renderer/renderer_ppapi_host.h
index da4a9b51a0de538dd15f1c00ed9efe5bfff567d6..51a5e1fb6dbe474e8ead47d839eadd3eb07e9180 100644
--- a/content/public/renderer/renderer_ppapi_host.h
+++ b/content/public/renderer/renderer_ppapi_host.h
@@ -13,7 +13,9 @@
 #include "ppapi/c/pp_instance.h"
 #include "webkit/plugins/ppapi/plugin_delegate.h"
 
+namespace base {
 class FilePath;
+}
 
 namespace gfx {
 class Point;
@@ -65,7 +67,7 @@ class RendererPpapiHost {
   CONTENT_EXPORT static RendererPpapiHost* CreateExternalPluginModule(
       scoped_refptr<webkit::ppapi::PluginModule> plugin_module,
       webkit::ppapi::PluginInstance* plugin_instance,
-      const FilePath& file_path,
+      const base::FilePath& file_path,
       ppapi::PpapiPermissions permissions,
       const IPC::ChannelHandle& channel_handle,
       base::ProcessId plugin_pid,