base: Add Is* functions to Value class.

chrome/test/base/ui_test_utils.cc

Index: chrome/test/base/ui_test_utils.cc
diff --git a/chrome/test/base/ui_test_utils.cc b/chrome/test/base/ui_test_utils.cc
index 7ee8db61a3a1888f40bef34bd438af405c35db1c..de3860a9eb75b27d5a929b10d847a16754e6dfd3 100644
--- a/chrome/test/base/ui_test_utils.cc
+++ b/chrome/test/base/ui_test_utils.cc
@@ -267,7 +267,7 @@ bool ExecuteJavaScriptHelper(RenderViewHost* render_view_host,
   json.append("]");
 
   scoped_ptr<Value> root_val(base::JSONReader::Read(json, true));
-  if (!root_val->IsType(Value::TYPE_LIST))
+  if (!root_val->IsList())
     return false;
 
   ListValue* list = static_cast<ListValue*>(root_val.get());
@@ -1016,7 +1016,7 @@ class SnapshotTaker {
     // Parse the JSON.
     std::vector<int> dimensions;
     scoped_ptr<Value> value(base::JSONReader::Read(json, true));
-    if (!value->IsType(Value::TYPE_LIST))
+    if (!value->IsList())
       return false;
     ListValue* list = static_cast<ListValue*>(value.get());
     int width, height;