Fix the new First Run sentinel file path determination.

chrome/browser/first_run/first_run_internal.h

Index: chrome/browser/first_run/first_run_internal.h
diff --git a/chrome/browser/first_run/first_run_internal.h b/chrome/browser/first_run/first_run_internal.h
index 42e60899d07f84c1223cc652943f7ccae7582139..19aad84a8ea8aa0fda7de6997be8299c1e3f356d 100644
--- a/chrome/browser/first_run/first_run_internal.h
+++ b/chrome/browser/first_run/first_run_internal.h
@@ -37,15 +37,13 @@ void SetupMasterPrefsFromInstallPrefs(
 // Creates the sentinel file that signals that chrome has been configured.
 bool CreateSentinel();
 
+// Gives the full path to the sentinel file. The file might not exist.
+bool GetFirstRunSentinelFilePath(base::FilePath* path);
+
 // -- Platform-specific functions --
 
 void DoPostImportPlatformSpecificTasks(Profile* profile);
 
-// Gives the full path to the sentinel file. The file might not exist.
-// This function has a common implementation on OS_POSIX and a windows specific
-// implementation.
-bool GetFirstRunSentinelFilePath(base::FilePath* path);
-
 // Populates |path| with the old path to first run sentinel for the current
 // configuration. Returns true if there is a legacy path for this configuration
 // and it could be obtained.