Use v8::MicrotasksScope internally in V8RecursionScope.

content/renderer/java/gin_java_bridge_value_converter_unittest.cc

Index: content/renderer/java/gin_java_bridge_value_converter_unittest.cc
diff --git a/content/renderer/java/gin_java_bridge_value_converter_unittest.cc b/content/renderer/java/gin_java_bridge_value_converter_unittest.cc
index 2de3e1242cb0c9412114cc7f70966250053e6a8d..2178fca7977e8e08ec9c6f07c67f6ebe921ec6c8 100644
--- a/content/renderer/java/gin_java_bridge_value_converter_unittest.cc
+++ b/content/renderer/java/gin_java_bridge_value_converter_unittest.cc
@@ -12,6 +12,7 @@
 #include "content/common/android/gin_java_bridge_value.h"
 #include "content/renderer/java/gin_java_bridge_value_converter.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/WebKit/public/web/WebScopedMicrotaskSuppression.h"
 #include "v8/include/v8.h"
 
 namespace content {
@@ -99,6 +100,7 @@ TEST_F(GinJavaBridgeValueConverterTest, TypedArrays) {
   v8::Local<v8::Context> context =
       v8::Local<v8::Context>::New(isolate_, context_);
   v8::Context::Scope context_scope(context);
+  blink::WebScopedMicrotaskSuppression microtasks_scope;
 
   scoped_ptr<GinJavaBridgeValueConverter> converter(
       new GinJavaBridgeValueConverter());