Remove unnecessary instrumentation for several jank bugs.

net/proxy/proxy_script_decider.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 "net/proxy/proxy_script_decider.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/compiler_specific.h"
 #include "base/format_macros.h"
@@ skipping 149 matching lines @@
   if (config.auto_detect()) {
     pac_sources.push_back(PacSource(PacSource::WPAD_DHCP, GURL(kWpadUrl)));
     pac_sources.push_back(PacSource(PacSource::WPAD_DNS, GURL(kWpadUrl)));
   }
   if (config.has_pac_url())
     pac_sources.push_back(PacSource(PacSource::CUSTOM, config.pac_url()));
   return pac_sources;
 }
 
 void ProxyScriptDecider::OnIOCompletion(int result) {
-  // TODO(vadimt): Remove ScopedTracker below once crbug.com/436634 is fixed.
-  tracked_objects::ScopedTracker tracking_profile(
-      FROM_HERE_WITH_EXPLICIT_FUNCTION(
-          "436634 ProxyScriptDecider::OnIOCompletion"));
-
   DCHECK_NE(STATE_NONE, next_state_);
   int rv = DoLoop(result);
   if (rv != ERR_IO_PENDING) {
     DidComplete();
     DoCallback(rv);
   }
 }
 
 int ProxyScriptDecider::DoLoop(int result) {
   DCHECK_NE(next_state_, STATE_NONE);
@@ skipping 295 matching lines @@
   }
 
   // This is safe to call in any state.
   if (dhcp_proxy_script_fetcher_)
     dhcp_proxy_script_fetcher_->Cancel();
 
   DidComplete();
 }
 
 }  // namespace net