Replace ENABLE(ASSERT) with DCHECK_IS_ON().

third_party/WebKit/Source/modules/webdatabase/DatabaseManager.h

Index: third_party/WebKit/Source/modules/webdatabase/DatabaseManager.h
diff --git a/third_party/WebKit/Source/modules/webdatabase/DatabaseManager.h b/third_party/WebKit/Source/modules/webdatabase/DatabaseManager.h
index 165d461786e983a777e2d61aac94eba6345a3427..65ee92b581df1f12e8d2d5b636a1e68eed85be5e 100644
--- a/third_party/WebKit/Source/modules/webdatabase/DatabaseManager.h
+++ b/third_party/WebKit/Source/modules/webdatabase/DatabaseManager.h
@@ -55,7 +55,7 @@ class DatabaseManager {
   void registerDatabaseContext(DatabaseContext*);
   void unregisterDatabaseContext(DatabaseContext*);
 
-#if ENABLE(ASSERT)
+#if DCHECK_IS_ON()
   void didConstructDatabaseContext();
   void didDestructDatabaseContext();
 #else
@@ -109,9 +109,9 @@ class DatabaseManager {
                                 Member<DatabaseContext>>
       ContextMap;
   ContextMap m_contextMap;
-#if ENABLE(ASSERT)
-  int m_databaseContextRegisteredCount;
-  int m_databaseContextInstanceCount;
+#if DCHECK_IS_ON()
+  int m_databaseContextRegisteredCount = 0;
+  int m_databaseContextInstanceCount = 0;
 #endif
 };