Remove unnecessary instrumentation for several jank bugs.

components/domain_reliability/monitor.cc

Index: components/domain_reliability/monitor.cc
diff --git a/components/domain_reliability/monitor.cc b/components/domain_reliability/monitor.cc
index c3a00ab92454cd2e700dd3e3f4fcc179e3cc7d8b..bd86ad9d4f0f23e4a21d546cb8ac7dd78a8057a4 100644
--- a/components/domain_reliability/monitor.cc
+++ b/components/domain_reliability/monitor.cc
@@ -76,11 +76,6 @@ void DomainReliabilityMonitor::MoveToNetworkThread() {
 
 void DomainReliabilityMonitor::InitURLRequestContext(
     net::URLRequestContext* url_request_context) {
-  // TODO(vadimt): Remove ScopedTracker below once crbug.com/436671 is fixed.
-  tracked_objects::ScopedTracker tracking_profile(
-      FROM_HERE_WITH_EXPLICIT_FUNCTION(
-          "436671 DomainReliabilityMonitor::InitURLRequestContext"));
-
   DCHECK(OnNetworkThread());
   DCHECK(moved_to_network_thread_);
 
@@ -106,7 +101,7 @@ void DomainReliabilityMonitor::InitURLRequestContext(
 }
 
 void DomainReliabilityMonitor::AddBakedInConfigs() {
-  // TODO(vadimt): Remove ScopedTracker below once crbug.com/436671 is fixed.
+  // TODO(ttuttle): Remove ScopedTracker below once crbug.com/436671 is fixed.
   tracked_objects::ScopedTracker tracking_profile(
       FROM_HERE_WITH_EXPLICIT_FUNCTION(
           "436671 DomainReliabilityMonitor::AddBakedInConfigs"));
@@ -196,11 +191,6 @@ DomainReliabilityContext* DomainReliabilityMonitor::AddContextForTesting(
     scoped_ptr<const DomainReliabilityConfig> config) {
   DCHECK(OnNetworkThread());
 
-  // TODO(vadimt): Remove ScopedTracker below once crbug.com/436671 is fixed.
-  tracked_objects::ScopedTracker tracking_profile(
-      FROM_HERE_WITH_EXPLICIT_FUNCTION(
-          "436671 DomainReliabilityConfig::AddContextForConfig"));
-
   return context_manager_.AddContextForConfig(config.Pass());
 }