Modify instrumentation for various jank bugs, mostly removing outdated sites.

chrome/browser/devtools/devtools_network_transaction.cc

Index: chrome/browser/devtools/devtools_network_transaction.cc
diff --git a/chrome/browser/devtools/devtools_network_transaction.cc b/chrome/browser/devtools/devtools_network_transaction.cc
index 1f719c89fb5cf882e240a4c5fbe50f9638427726..6a0f1b578150a908f2ec61b75eda8bee1288dd46 100644
--- a/chrome/browser/devtools/devtools_network_transaction.cc
+++ b/chrome/browser/devtools/devtools_network_transaction.cc
@@ -4,7 +4,6 @@
 
 #include "chrome/browser/devtools/devtools_network_transaction.h"
 
-#include "base/profiler/scoped_tracker.h"
 #include "chrome/browser/devtools/devtools_network_controller.h"
 #include "chrome/browser/devtools/devtools_network_interceptor.h"
 #include "net/base/net_errors.h"
@@ -53,11 +52,6 @@ void DevToolsNetworkTransaction::Throttle(int result) {
 }
 
 void DevToolsNetworkTransaction::OnCallback(int rv) {
-  // TODO(vadimt): Remove ScopedTracker below once crbug.com/424359 is fixed.
-  tracked_objects::ScopedTracker tracking_profile(
-      FROM_HERE_WITH_EXPLICIT_FUNCTION(
-          "424359 DevToolsNetworkTransaction::OnCallback"));
-
   if (failed_)
     return;
   DCHECK(!callback_.is_null());