Revert: Internalize JSON chunk merging to trace_event.h API.

content/browser/trace_subscriber_stdio_unittest.cc

 // Copyright (c) 2011 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 "content/browser/trace_subscriber_stdio.h"
 
 #include "base/scoped_temp_dir.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace {
@@ skipping 10 matching lines @@
     EXPECT_TRUE(file_util::ReadFileToString(trace_file_, &result));
     return result;
   }
 
   ScopedTempDir trace_dir_;
   FilePath trace_file_;
 };
 
 }  // namespace
 
-TEST_F(TraceSubscriberStdioTest, CanWriteDataToFile) {
+TEST_F(TraceSubscriberStdioTest, CanWriteBracketedDataToFile) {
   TraceSubscriberStdio subscriber(trace_file_);
   subscriber.OnTraceDataCollected("[foo]");
   subscriber.OnTraceDataCollected("[bar]");
   EXPECT_TRUE(subscriber.IsValid());
 
   subscriber.OnEndTracingComplete();
   EXPECT_FALSE(subscriber.IsValid());
+
+  EXPECT_EQ("[foo,bar,]", ReadTraceFile());
 }