Add profiling for FinishConfigureDataTypesOnFrontendLoop (sync).

chrome/browser/sync/glue/sync_backend_host_impl.cc

Index: chrome/browser/sync/glue/sync_backend_host_impl.cc
diff --git a/chrome/browser/sync/glue/sync_backend_host_impl.cc b/chrome/browser/sync/glue/sync_backend_host_impl.cc
index 4114a32fce8218f95f1fb38fbb1b3e1fe786b014..1c652b716a93aa2b0078291f47e0b5ae13dbbe14 100644
--- a/chrome/browser/sync/glue/sync_backend_host_impl.cc
+++ b/chrome/browser/sync/glue/sync_backend_host_impl.cc
@@ -609,6 +609,11 @@ void SyncBackendHostImpl::FinishConfigureDataTypesOnFrontendLoop(
     const syncer::ModelTypeSet failed_configuration_types,
     const base::Callback<void(syncer::ModelTypeSet,
                               syncer::ModelTypeSet)>& ready_task) {
+  // TODO(erikchen): Remove ScopedTracker below once crbug.com/458406 is fixed.
+  tracked_objects::ScopedTracker tracking_profile1(
+      FROM_HERE_WITH_EXPLICIT_FUNCTION(
+          "458406 SyncBackendHostImpl::"

[vadimt, 2015/02/13 15:22:57]

You can't split this string into 2 lines. Our source parser doesn't
understand this. Please shorten the string.

[erikchen, 2015/02/13 23:28:39]

Done.

+          "FinishConfigureDataTypesOnFrontendLoop"));
   if (!frontend_)
     return;
 
@@ -618,6 +623,11 @@ void SyncBackendHostImpl::FinishConfigureDataTypesOnFrontendLoop(
         ModelTypeSetToObjectIdSet(enabled_types));
   }
 
+  // TODO(erikchen): Remove ScopedTracker below once crbug.com/458406 is fixed.
+  tracked_objects::ScopedTracker tracking_profile2(
+      FROM_HERE_WITH_EXPLICIT_FUNCTION(
+          "458406 SyncBackendHostImpl::"
+          "FinishConfigureDataTypesOnFrontendLoop::ReadyTask"));

[vadimt, 2015/02/13 15:22:57]

same

[erikchen, 2015/02/13 23:28:39]

Done.

   if (!ready_task.is_null())
     ready_task.Run(succeeded_configuration_types, failed_configuration_types);
 }