Rename ExceptionCode constants to use the names in the spec (2/3)

Source/core/loader/appcache/DOMApplicationCache.cpp

Index: Source/core/loader/appcache/DOMApplicationCache.cpp
diff --git a/Source/core/loader/appcache/DOMApplicationCache.cpp b/Source/core/loader/appcache/DOMApplicationCache.cpp
index c8206d1be1c4feb90a8fc266dea8b23f413061c7..3b2467bb0d4ffe14145ba37afdad8624cef5f55f 100644
--- a/Source/core/loader/appcache/DOMApplicationCache.cpp
+++ b/Source/core/loader/appcache/DOMApplicationCache.cpp
@@ -72,14 +72,14 @@ void DOMApplicationCache::update(ExceptionCode& ec)
 {
     ApplicationCacheHost* cacheHost = applicationCacheHost();
     if (!cacheHost || !cacheHost->update())
-        ec = INVALID_STATE_ERR;
+        ec = InvalidStateError;
 }
 
 void DOMApplicationCache::swapCache(ExceptionCode& ec)
 {
     ApplicationCacheHost* cacheHost = applicationCacheHost();
     if (!cacheHost || !cacheHost->swapCache())
-        ec = INVALID_STATE_ERR;
+        ec = InvalidStateError;
 }
 
 void DOMApplicationCache::abort()