Initialize StatisticsRecorder in Child Process to hold

chrome/browser/net/http_pipelining_compatibility_client_unittest.cc

 // Copyright (c) 2012 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 "chrome/browser/net/http_pipelining_compatibility_client.h"
 
 #include <map>
 #include <string>
 #include <vector>
 
@@ skipping 67 matching lines @@
   HttpPipeliningCompatibilityClientTest()
       : test_server_(
           net::TestServer::TYPE_HTTP,
           net::TestServer::kLocalhost,
           FilePath(FILE_PATH_LITERAL("chrome/test/data/http_pipelining"))),
         io_thread_(BrowserThread::IO, &message_loop_) {
   }
 
  protected:
   virtual void SetUp() OVERRIDE {
+    // Start up a histogram recorder.
+    // TODO(rtenneti): Leaks StatisticsRecorder and will update suppressions.
+    base::StatisticsRecorder::Initialize();
     ASSERT_TRUE(test_server_.Start());
     context_ = new TestURLRequestContextGetter(
         BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO));
     context_->AddRef();
 
     for (size_t i = 0; i < arraysize(kHistogramNames); ++i) {
       const char* name = kHistogramNames[i];
       base::Histogram::SampleSet sample = GetHistogram(name);
       if (sample.TotalCount() > 0) {
         original_samples_[name] = sample;
@@ skipping 120 matching lines @@
       histograms_[name] = current_histogram;
     } else if (cached_histogram) {
       cached_histogram->SnapshotSample(&sample);
     }
     return sample;
   }
 
   static std::map<std::string, base::Histogram*> histograms_;
   std::map<std::string, base::Histogram::SampleSet> samples_;
   std::map<std::string, base::Histogram::SampleSet> original_samples_;
-  base::StatisticsRecorder recorder_;
 };
 
 // static
 std::map<std::string, base::Histogram*>
     HttpPipeliningCompatibilityClientTest::histograms_;
 
 TEST_F(HttpPipeliningCompatibilityClientTest, Success) {
   RequestInfo info;
   info.filename = "files/alphabet.txt";
   info.expected_response = "abcdefghijklmnopqrstuvwxyz";
@@ skipping 315 matching lines @@
   callback.WaitForResult();
 
   ExpectHistogramCount(1, false, FIELD_CANARY);
   ExpectHistogramCount(0, false, FIELD_SUCCESS);
   ExpectHistogramCount(0, true, FIELD_SUCCESS);
 }
 
 }  // anonymous namespace
 
 }  // namespace chrome_browser_net