Add FilePath to base namespace.

content/browser/download/download_item_factory.h

Index: content/browser/download/download_item_factory.h
diff --git a/content/browser/download/download_item_factory.h b/content/browser/download/download_item_factory.h
index 5922e6ebb3f885fab9522f5d5667b6f29c5642e1..8104b069e5f650cb6c5d6147ab98ed009cd14493 100644
--- a/content/browser/download/download_item_factory.h
+++ b/content/browser/download/download_item_factory.h
@@ -15,9 +15,12 @@
 #include "content/public/browser/download_id.h"
 #include "content/public/browser/download_item.h"
 
-class FilePath;
 class GURL;
 
+namespace base {
+class FilePath;
+}
+
 namespace net {
 class BoundNetLog;
 }
@@ -37,7 +40,7 @@ public:
   virtual DownloadItemImpl* CreatePersistedItem(
       DownloadItemImplDelegate* delegate,
       DownloadId download_id,
-      const FilePath& path,
+      const base::FilePath& path,
       const GURL& url,
       const GURL& referrer_url,
       const base::Time& start_time,
@@ -55,7 +58,7 @@ public:
 
   virtual DownloadItemImpl* CreateSavePageItem(
       DownloadItemImplDelegate* delegate,
-      const FilePath& path,
+      const base::FilePath& path,
       const GURL& url,
       DownloadId download_id,
       const std::string& mime_type,