Add FilePath to base namespace.

chrome/browser/profiles/profile_metrics.h

Index: chrome/browser/profiles/profile_metrics.h
diff --git a/chrome/browser/profiles/profile_metrics.h b/chrome/browser/profiles/profile_metrics.h
index 2850a4fae77d566b511c7ca599bd5a7c43be1368..c74a8ced884c546fcde369951a900a3e20803efb 100644
--- a/chrome/browser/profiles/profile_metrics.h
+++ b/chrome/browser/profiles/profile_metrics.h
@@ -10,9 +10,12 @@
 
 #include "base/basictypes.h"
 
-class FilePath;
 class ProfileManager;
 
+namespace base {
+class FilePath;
+}
+
 class ProfileMetrics {
  public:
   // Enum for counting the ways users were added.
@@ -80,9 +83,9 @@ class ProfileMetrics {
 
   // These functions should only be called on the UI thread because they hook
   // into g_browser_process through a helper function.
-  static void LogProfileLaunch(const FilePath& profile_path);
-  static void LogProfileSyncSignIn(const FilePath& profile_path);
-  static void LogProfileUpdate(const FilePath& profile_path);
+  static void LogProfileLaunch(const base::FilePath& profile_path);
+  static void LogProfileSyncSignIn(const base::FilePath& profile_path);
+  static void LogProfileUpdate(const base::FilePath& profile_path);
 };