Refactor Future constructors.

sdk/lib/indexed_db/dartium/indexed_db_dartium.dart

Index: sdk/lib/indexed_db/dartium/indexed_db_dartium.dart
diff --git a/sdk/lib/indexed_db/dartium/indexed_db_dartium.dart b/sdk/lib/indexed_db/dartium/indexed_db_dartium.dart
index 6fad318309025870988630df026866dcd88418f5..87c0ebeb74ad4596a2f6b83c05d8685d3c54ffc9 100644
--- a/sdk/lib/indexed_db/dartium/indexed_db_dartium.dart
+++ b/sdk/lib/indexed_db/dartium/indexed_db_dartium.dart
@@ -45,7 +45,7 @@ class Cursor extends NativeFieldWrapperClass1 {
    try {
       return _completeRequest($dom_delete());
     } catch (e, stacktrace) {
-      return new Future.immediateError(e, stacktrace);
+      return new Future.error(e, stacktrace);
     }
   }
 
@@ -54,7 +54,7 @@ class Cursor extends NativeFieldWrapperClass1 {
    try {
       return _completeRequest($dom_update(value));
     } catch (e, stacktrace) {
-      return new Future.immediateError(e, stacktrace);
+      return new Future.error(e, stacktrace);
     }
   }
 
@@ -261,7 +261,7 @@ class IdbFactory extends NativeFieldWrapperClass1 {
       {int version, void onUpgradeNeeded(VersionChangeEvent),
       void onBlocked(Event)}) {
     if ((version == null) != (onUpgradeNeeded == null)) {
-      return new Future.immediateError(new ArgumentError(
+      return new Future.error(new ArgumentError(
           'version and onUpgradeNeeded must be specified together'));
     }
     try {
@@ -280,7 +280,7 @@ class IdbFactory extends NativeFieldWrapperClass1 {
       }
       return _completeRequest(request);
     } catch (e, stacktrace) {
-      return new Future.immediateError(e, stacktrace);
+      return new Future.error(e, stacktrace);
     }
   }
 
@@ -295,7 +295,7 @@ class IdbFactory extends NativeFieldWrapperClass1 {
       }
       return _completeRequest(request);
     } catch (e, stacktrace) {
-      return new Future.immediateError(e, stacktrace);
+      return new Future.error(e, stacktrace);
     }
   }
 
@@ -308,7 +308,7 @@ class IdbFactory extends NativeFieldWrapperClass1 {
 
       return _completeRequest(request);
     } catch (e, stacktrace) {
-      return new Future.immediateError(e, stacktrace);
+      return new Future.error(e, stacktrace);
     }
   }
 
@@ -388,7 +388,7 @@ class Index extends NativeFieldWrapperClass1 {
       }
       return _completeRequest(request);
     } catch (e, stacktrace) {
-      return new Future.immediateError(e, stacktrace);
+      return new Future.error(e, stacktrace);
     }
   }
 
@@ -399,7 +399,7 @@ class Index extends NativeFieldWrapperClass1 {
 
       return _completeRequest(request);
     } catch (e, stacktrace) {
-      return new Future.immediateError(e, stacktrace);
+      return new Future.error(e, stacktrace);
     }
   }
 
@@ -410,7 +410,7 @@ class Index extends NativeFieldWrapperClass1 {
 
       return _completeRequest(request);
     } catch (e, stacktrace) {
-      return new Future.immediateError(e, stacktrace);
+      return new Future.error(e, stacktrace);
     }
   }
 
@@ -749,7 +749,7 @@ class ObjectStore extends NativeFieldWrapperClass1 {
       }
       return _completeRequest(request);
     } catch (e, stacktrace) {
-      return new Future.immediateError(e, stacktrace);
+      return new Future.error(e, stacktrace);
     }
   }
 
@@ -758,7 +758,7 @@ class ObjectStore extends NativeFieldWrapperClass1 {
     try {
       return _completeRequest($dom_clear());
     } catch (e, stacktrace) {
-      return new Future.immediateError(e, stacktrace);
+      return new Future.error(e, stacktrace);
     }
   }
 
@@ -767,7 +767,7 @@ class ObjectStore extends NativeFieldWrapperClass1 {
     try {
       return _completeRequest($dom_delete(key_OR_keyRange));
     } catch (e, stacktrace) {
-      return new Future.immediateError(e, stacktrace);
+      return new Future.error(e, stacktrace);
     }
   }
 
@@ -782,7 +782,7 @@ class ObjectStore extends NativeFieldWrapperClass1 {
       }
       return _completeRequest(request);
     } catch (e, stacktrace) {
-      return new Future.immediateError(e, stacktrace);
+      return new Future.error(e, stacktrace);
     }
   }
 
@@ -797,7 +797,7 @@ class ObjectStore extends NativeFieldWrapperClass1 {
       }
       return _completeRequest(request);
     } catch (e, stacktrace) {
-      return new Future.immediateError(e, stacktrace);
+      return new Future.error(e, stacktrace);
     }
   }
 
@@ -808,7 +808,7 @@ class ObjectStore extends NativeFieldWrapperClass1 {
 
       return _completeRequest(request);
     } catch (e, stacktrace) {
-      return new Future.immediateError(e, stacktrace);
+      return new Future.error(e, stacktrace);
     }
   }