Removes MessageLoop::TYPE_XXX where possible

android_webview/browser/net/android_stream_reader_url_request_job_unittest.cc

Index: android_webview/browser/net/android_stream_reader_url_request_job_unittest.cc
diff --git a/android_webview/browser/net/android_stream_reader_url_request_job_unittest.cc b/android_webview/browser/net/android_stream_reader_url_request_job_unittest.cc
index 651726b6b90824fed9741c5659235f285d892b3c..f09b5c534327eca620272731a82e4543d4b272e7 100644
--- a/android_webview/browser/net/android_stream_reader_url_request_job_unittest.cc
+++ b/android_webview/browser/net/android_stream_reader_url_request_job_unittest.cc
@@ -147,7 +147,7 @@ class TestStreamReaderJob : public AndroidStreamReaderURLRequestJob {
 
 class AndroidStreamReaderURLRequestJobTest : public Test {
  public:
-  AndroidStreamReaderURLRequestJobTest() : loop_(base::MessageLoop::TYPE_IO) {}
+  AndroidStreamReaderURLRequestJobTest() {}
 
  protected:
   virtual void SetUp() {
@@ -195,7 +195,7 @@ class AndroidStreamReaderURLRequestJobTest : public Test {
     DCHECK(set_protocol);
   }
 
-  base::MessageLoop loop_;
+  base::MessageLoopForIO loop_;
   TestURLRequestContext context_;
   android_webview::AwURLRequestJobFactory factory_;
   TestDelegate url_request_delegate_;