Reland of Adding task runner/ message loop to tests that use IsolateHolder.

gin/converter_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "gin/converter.h"
 
 #include <limits.h>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
 #include "gin/public/isolate_holder.h"
 #include "gin/test/v8_test.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "v8/include/v8.h"
 
+namespace gin {
+
 using v8::Array;
 using v8::Boolean;
 using v8::HandleScope;
 using v8::Integer;
 using v8::Local;
 using v8::Null;
 using v8::Number;
 using v8::Object;
 using v8::String;
 using v8::Undefined;
 using v8::Value;
 
-namespace gin {
-
 typedef V8Test ConverterTest;
 
 TEST_F(ConverterTest, Bool) {
   HandleScope handle_scope(instance_->isolate());
 
   EXPECT_TRUE(Converter<bool>::ToV8(instance_->isolate(), true)->StrictEquals(
       Boolean::New(instance_->isolate(), true)));
   EXPECT_TRUE(Converter<bool>::ToV8(instance_->isolate(), false)->StrictEquals(
       Boolean::New(instance_->isolate(), false)));
 
@@ skipping 84 matching lines @@
                     ->StrictEquals(js_array->Get(static_cast<int>(i))));
   }
 
   std::vector<int> actual;
   EXPECT_TRUE(Converter<std::vector<int> >::FromV8(instance_->isolate(),
                                                    js_array, &actual));
   EXPECT_EQ(expected, actual);
 }
 
 }  // namespace gin