Removing unused Births methods and unnecessary link from chrome://profiler.

Removing [Reset tracking data] was approved by jar@. It was never fully implemented (only for the browser process) and is superseded by taking and comparing snapshots in chrome://profiler tab.

BUG=456354

Review URL: https://codereview.chromium.org/980333004

Cr-Commit-Position: refs/heads/master@{#319770}

1 files changed, 0 insertions, 24 deletions

diff --git a/base/tracked_objects.cc b/base/tracked_objects.cc
index f7ee6da..5359d89 100644
--- a/base/tracked_objects.cc
+++ b/base/tracked_objects.cc
@@ -227,10 +227,6 @@ int Births::birth_count() const { return birth_count_; }
 
 void Births::RecordBirth() { ++birth_count_; }
 
-void Births::ForgetBirth() { --birth_count_; }
-
-void Births::Clear() { birth_count_ = 0; }
-
 //------------------------------------------------------------------------------
 // ThreadData maintains the central data for all births and deaths on a single
 // thread.
@@ -654,26 +650,6 @@ void ThreadData::SnapshotMaps(BirthMap* birth_map,
     parent_child_set->insert(*it);
 }
 
-// static
-void ThreadData::ResetAllThreadData() {
-  ThreadData* my_list = first();
-
-  for (ThreadData* thread_data = my_list;
-       thread_data;
-       thread_data = thread_data->next())
-    thread_data->Reset();
-}
-
-void ThreadData::Reset() {
-  base::AutoLock lock(map_lock_);
-  for (DeathMap::iterator it = death_map_.begin();
-       it != death_map_.end(); ++it)
-    it->second.Clear();
-  for (BirthMap::iterator it = birth_map_.begin();
-       it != birth_map_.end(); ++it)
-    it->second->Clear();
-}
-
 static void OptionallyInitializeAlternateTimer() {
   NowFunction* alternate_time_source = GetAlternateTimeSource();
   if (alternate_time_source)