Next step in overload dispatcher refactoring.

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 d5d6415fa44fc901fb2a2dda4dc126dce3be7c4b..6ba28ccdb39c8ea582fcf67bdd1e013e8a115513 100644
--- a/sdk/lib/indexed_db/dartium/indexed_db_dartium.dart
+++ b/sdk/lib/indexed_db/dartium/indexed_db_dartium.dart
@@ -165,7 +165,7 @@ class Database extends EventTarget {
     if ((storeName_OR_storeNames is String || storeName_OR_storeNames == null) && (mode is String || mode == null)) {
       return _transaction_3(storeName_OR_storeNames, mode);
     }
-    throw "Incorrect number or type of arguments";
+    throw new ArgumentError("Incorrect number or type of arguments");
   }
 
 
@@ -285,7 +285,7 @@ class Index extends NativeFieldWrapperClass1 {
     if (?key_OR_range) {
       return _count_3(key_OR_range);
     }
-    throw "Incorrect number or type of arguments";
+    throw new ArgumentError("Incorrect number or type of arguments");
   }
 
 
@@ -307,7 +307,7 @@ class Index extends NativeFieldWrapperClass1 {
     if (?key) {
       return _get_2(key);
     }
-    throw "Incorrect number or type of arguments";
+    throw new ArgumentError("Incorrect number or type of arguments");
   }
 
 
@@ -325,7 +325,7 @@ class Index extends NativeFieldWrapperClass1 {
     if (?key) {
       return _getKey_2(key);
     }
-    throw "Incorrect number or type of arguments";
+    throw new ArgumentError("Incorrect number or type of arguments");
   }
 
 
@@ -352,7 +352,7 @@ class Index extends NativeFieldWrapperClass1 {
     if (?key_OR_range && (direction is String || direction == null)) {
       return _openCursor_5(key_OR_range, direction);
     }
-    throw "Incorrect number or type of arguments";
+    throw new ArgumentError("Incorrect number or type of arguments");
   }
 
 
@@ -391,7 +391,7 @@ class Index extends NativeFieldWrapperClass1 {
     if (?key_OR_range && (direction is String || direction == null)) {
       return _openKeyCursor_5(key_OR_range, direction);
     }
-    throw "Incorrect number or type of arguments";
+    throw new ArgumentError("Incorrect number or type of arguments");
   }
 
 
@@ -595,7 +595,7 @@ class ObjectStore extends NativeFieldWrapperClass1 {
     if (?key_OR_range) {
       return _count_3(key_OR_range);
     }
-    throw "Incorrect number or type of arguments";
+    throw new ArgumentError("Incorrect number or type of arguments");
   }
 
 
@@ -617,7 +617,7 @@ class ObjectStore extends NativeFieldWrapperClass1 {
     if ((name is String || name == null) && (keyPath is String || keyPath == null) && (options is Map || options == null)) {
       return _createIndex_2(name, keyPath, options);
     }
-    throw "Incorrect number or type of arguments";
+    throw new ArgumentError("Incorrect number or type of arguments");
   }
 
 
@@ -635,7 +635,7 @@ class ObjectStore extends NativeFieldWrapperClass1 {
     if (?key_OR_keyRange) {
       return _delete_2(key_OR_keyRange);
     }
-    throw "Incorrect number or type of arguments";
+    throw new ArgumentError("Incorrect number or type of arguments");
   }
 
 
@@ -657,7 +657,7 @@ class ObjectStore extends NativeFieldWrapperClass1 {
     if (?key) {
       return _get_2(key);
     }
-    throw "Incorrect number or type of arguments";
+    throw new ArgumentError("Incorrect number or type of arguments");
   }
 
 
@@ -688,7 +688,7 @@ class ObjectStore extends NativeFieldWrapperClass1 {
     if (?key_OR_range && (direction is String || direction == null)) {
       return _openCursor_5(key_OR_range, direction);
     }
-    throw "Incorrect number or type of arguments";
+    throw new ArgumentError("Incorrect number or type of arguments");
   }