[chromeos] Remove dependencies of StatisticsProvider on chrome.

chrome/browser/chromeos/drive/file_system_util.cc

Index: chrome/browser/chromeos/drive/file_system_util.cc
diff --git a/chrome/browser/chromeos/drive/file_system_util.cc b/chrome/browser/chromeos/drive/file_system_util.cc
index 11d6f9bd1f585effc3d019246c914af742ccb126..f1ff9576da12c116ef70ec545bc97dd44b247dda 100644
--- a/chrome/browser/chromeos/drive/file_system_util.cc
+++ b/chrome/browser/chromeos/drive/file_system_util.cc
@@ -23,6 +23,7 @@
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_paths_internal.h"
 #include "chrome/common/url_constants.h"
+#include "chromeos/chromeos_constants.h"
 #include "content/public/browser/browser_thread.h"
 #include "net/base/escape.h"
 #include "webkit/fileapi/file_system_url.h"
@@ -222,7 +223,7 @@ base::FilePath GetCacheRootPath(Profile* profile) {
   base::FilePath cache_base_path;
   chrome::GetUserCacheDirectory(profile->GetPath(), &cache_base_path);
   base::FilePath cache_root_path =
-      cache_base_path.Append(chrome::kDriveCacheDirname);
+      cache_base_path.Append(chromeos::kDriveCacheDirname);
   return cache_root_path.Append(kFileCacheVersionDir);
 }