Revert 105659 - Delay network requests on startup if any webRequest or webNavigation extensions a...

chrome/browser/extensions/extension_webrequest_time_tracker.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 "chrome/browser/extensions/extension_webrequest_time_tracker.h"
 
 #include "base/bind.h"
 #include "base/compiler_specific.h"
 #include "base/metrics/histogram.h"
 #include "chrome/browser/browser_process.h"
@@ skipping 133 matching lines @@
   RequestTimeLog& log = request_time_logs_[request_id];
   if (log.completed)
     return;
 
   log.request_duration = end_time - log.request_start_time;
   log.completed = true;
 
   if (log.extension_block_durations.empty())
     return;
 
-  UMA_HISTOGRAM_TIMES("Extensions.NetworkDelay", log.block_duration);
+  HISTOGRAM_TIMES("Extensions.NetworkDelay", log.block_duration);
 
   Analyze(request_id);
 }
 
 std::set<std::string> ExtensionWebRequestTimeTracker::GetExtensionIds(
     const RequestTimeLog& log) const {
   std::set<std::string> result;
   for (std::map<std::string, base::TimeDelta>::const_iterator i =
            log.extension_block_durations.begin();
        i != log.extension_block_durations.end();
@@ skipping 80 matching lines @@
   // When a request is redirected, we have no way of knowing how long the
   // request would have taken, so we can't say how much an extension slowed
   // down this request. Just ignore it.
   request_time_logs_.erase(request_id);
 }
 
 void ExtensionWebRequestTimeTracker::SetDelegate(
     ExtensionWebRequestTimeTrackerDelegate* delegate) {
   delegate_.reset(delegate);
 }