Add FilePath to base namespace.

chrome/browser/jumplist_win.h

Index: chrome/browser/jumplist_win.h
diff --git a/chrome/browser/jumplist_win.h b/chrome/browser/jumplist_win.h
index 401b5417fb042bb4d098b0cfdcda08f6a5c3510b..d4865ab949c56e4e940baf02d9dd27a574d4d959 100644
--- a/chrome/browser/jumplist_win.h
+++ b/chrome/browser/jumplist_win.h
@@ -21,10 +21,14 @@
 #include "content/public/browser/browser_thread.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 
+namespace base {
+class FilePath;
+}
+
 namespace content {
 class NotificationRegistrar;
 }
-class FilePath;
+
 class Profile;
 class PageUsageData;
 
@@ -222,7 +226,7 @@ class JumpList : public TabRestoreServiceObserver,
   std::wstring app_id_;
 
   // The directory which contains JumpList icons.
-  FilePath icon_dir_;
+  base::FilePath icon_dir_;
 
   // Items in the "Most Visited" category of the application JumpList,
   // protected by the list_lock_.