Merging dart:html interfaces and implementations

sdk/lib/html/templates/html/dart2js/impl_IDBDatabase.darttemplate

Index: sdk/lib/html/templates/html/dart2js/impl_IDBDatabase.darttemplate
diff --git a/sdk/lib/html/templates/html/dart2js/impl_IDBDatabase.darttemplate b/sdk/lib/html/templates/html/dart2js/impl_IDBDatabase.darttemplate
index 1817667a75ae45db583b7a58265762f0f6a07e94..0082f70d96af81c7f110bc2f8193b78cc61954b0 100644
--- a/sdk/lib/html/templates/html/dart2js/impl_IDBDatabase.darttemplate
+++ b/sdk/lib/html/templates/html/dart2js/impl_IDBDatabase.darttemplate
@@ -4,7 +4,7 @@
 
 class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
 
-  _IDBTransactionImpl transaction(storeName_OR_storeNames, String mode) {
+  IDBTransaction transaction(storeName_OR_storeNames, String mode) {
     if (mode != 'readonly' && mode != 'readwrite') {
       throw new ArgumentError(mode);
     }
@@ -29,24 +29,24 @@ class $CLASSNAME$EXTENDS$IMPLEMENTS$NATIVESPEC {
     return txn;
   }
 
-  static _IDBTransactionImpl _transaction_string_mode($CLASSNAME db, stores, mode) {
+  static IDBTransaction _transaction_string_mode($CLASSNAME db, stores, mode) {
     return db._transaction(stores, mode);
   }
 
-  static _IDBTransactionImpl _transaction_numeric_mode($CLASSNAME db, stores, mode) {
+  static IDBTransaction _transaction_numeric_mode($CLASSNAME db, stores, mode) {
     int intMode;
     if (mode == 'readonly') intMode = IDBTransaction.READ_ONLY;
     if (mode == 'readwrite') intMode = IDBTransaction.READ_WRITE;
     return db._transaction(stores, intMode);
   }
 
-  _IDBTransactionImpl _transaction(stores, mode) native 'transaction';
+  IDBTransaction _transaction(stores, mode) native 'transaction';
 
   static bool _hasNumericMode(txn) =>
       JS('bool', 'typeof(#.mode) === "number"', txn);
 
 $!MEMBERS}
 
-// TODO(sra): This should be a static member of _IDBTransactionImpl but dart2js
+// TODO(sra): This should be a static member of IDBTransaction but dart2js
 // can't handle that.  Move it back after dart2js is completely done.
 var _transaction_fn;  // Assigned one of the static methods.