Move all remaining fileapi and quota unit tests from webkit/ to content/

webkit/browser/fileapi/quota/quota_backend_impl.h

Index: webkit/browser/fileapi/quota/quota_backend_impl.h
diff --git a/webkit/browser/fileapi/quota/quota_backend_impl.h b/webkit/browser/fileapi/quota/quota_backend_impl.h
index 787f53890fa7e21d21e3dea8aec47ffd73482e4e..ec4c45ac18b4eb726f06b175a5c17e7925ec438c 100644
--- a/webkit/browser/fileapi/quota/quota_backend_impl.h
+++ b/webkit/browser/fileapi/quota/quota_backend_impl.h
@@ -16,6 +16,10 @@ namespace base {
 class SequencedTaskRunner;
 }
 
+namespace content {
+class QuotaBackendImplTest;
+}
+
 namespace quota {
 class QuotaManagerProxy;
 }
@@ -60,7 +64,7 @@ class WEBKIT_STORAGE_BROWSER_EXPORT QuotaBackendImpl
       FileSystemType type) OVERRIDE;
 
  private:
-  friend class QuotaBackendImplTest;
+  friend class content::QuotaBackendImplTest;
 
   struct QuotaReservationInfo {
     QuotaReservationInfo(const GURL& origin, FileSystemType type, int64 delta);