refer to WebServiceWorkerCacheError values in c++03 style

Since WebServiceWorkerCacheError values are prefixed with
"WebServiceWorkerCacheError", the c++11 style enum prefix
is a bit redundant.

BUG=392621

Review URL: https://codereview.chromium.org/489473002

git-svn-id: svn://svn.chromium.org/blink/trunk@180548 bbb929c8-8fbe-4397-9dbb-9b2b20218538
diff --git a/third_party/WebKit/Source/modules/serviceworkers/CacheStorage.cpp b/third_party/WebKit/Source/modules/serviceworkers/CacheStorage.cpp
index 2eadf13..345acfb5 100644
--- a/third_party/WebKit/Source/modules/serviceworkers/CacheStorage.cpp
+++ b/third_party/WebKit/Source/modules/serviceworkers/CacheStorage.cpp
@@ -19,11 +19,11 @@
 {
     // FIXME: Construct correct DOM error objects rather than returning strings.
     switch (reason) {
-    case WebServiceWorkerCacheError::WebServiceWorkerCacheErrorNotImplemented:
+    case WebServiceWorkerCacheErrorNotImplemented:
         return "not implemented";
-    case WebServiceWorkerCacheError::WebServiceWorkerCacheErrorNotFound:
+    case WebServiceWorkerCacheErrorNotFound:
         return "not found";
-    case WebServiceWorkerCacheError::WebServiceWorkerCacheErrorExists:
+    case WebServiceWorkerCacheErrorExists:
         return "entry already exists";
     default:
         ASSERT_NOT_REACHED();