Kills TraceTicks, which was functionally the same as TimeTicks

base/trace_event/trace_log.cc

Index: base/trace_event/trace_log.cc
diff --git a/base/trace_event/trace_log.cc b/base/trace_event/trace_log.cc
index d5a02dd8a010a7c147cd67420433d04ab5044c7a..6f289048cdb0eefa18bfcc8ed0f2ff74b2a78c3b 100644
--- a/base/trace_event/trace_log.cc
+++ b/base/trace_event/trace_log.cc
@@ -137,7 +137,7 @@ void InitializeMetadataEvent(TraceEvent* trace_event,
   ::trace_event_internal::SetTraceValue(value, &arg_type, &arg_value);
   trace_event->Initialize(
       thread_id,
-      TraceTicks(),
+      TimeTicks(),
       ThreadTicks(),
       TRACE_EVENT_PHASE_METADATA,
       &g_category_group_enabled[g_category_metadata],
@@ -1079,7 +1079,7 @@ TraceEventHandle TraceLog::AddTraceEvent(
     const scoped_refptr<ConvertableToTraceFormat>* convertable_values,
     unsigned int flags) {
   int thread_id = static_cast<int>(base::PlatformThread::CurrentId());
-  base::TraceTicks now = base::TraceTicks::Now();
+  base::TimeTicks now = base::TimeTicks::Now();
   return AddTraceEventWithThreadIdAndTimestamp(
       phase,
       category_group_enabled,
@@ -1110,7 +1110,7 @@ TraceEventHandle TraceLog::AddTraceEventWithContextId(
     const scoped_refptr<ConvertableToTraceFormat>* convertable_values,
     unsigned int flags) {
   int thread_id = static_cast<int>(base::PlatformThread::CurrentId());
-  base::TraceTicks now = base::TraceTicks::Now();
+  base::TimeTicks now = base::TimeTicks::Now();
   return AddTraceEventWithThreadIdAndTimestamp(
       phase,
       category_group_enabled,
@@ -1137,7 +1137,7 @@ TraceEventHandle TraceLog::AddTraceEventWithThreadIdAndTimestamp(
     unsigned long long id,
     unsigned long long context_id,
     int thread_id,
-    const TraceTicks& timestamp,
+    const TimeTicks& timestamp,
     int num_args,
     const char** arg_names,
     const unsigned char* arg_types,
@@ -1169,7 +1169,7 @@ TraceEventHandle TraceLog::AddTraceEventWithThreadIdAndTimestamp(
     unsigned long long context_id,
     unsigned long long bind_id,
     int thread_id,
-    const TraceTicks& timestamp,
+    const TimeTicks& timestamp,
     int num_args,
     const char** arg_names,
     const unsigned char* arg_types,
@@ -1198,7 +1198,7 @@ TraceEventHandle TraceLog::AddTraceEventWithThreadIdAndTimestamp(
     id = MangleEventId(id);
   }
 
-  TraceTicks offset_event_timestamp = OffsetTimestamp(timestamp);
+  TimeTicks offset_event_timestamp = OffsetTimestamp(timestamp);
   ThreadTicks thread_now = ThreadNow();
 
   // |thread_local_event_buffer_| can be null if the current thread doesn't have
@@ -1347,7 +1347,7 @@ void TraceLog::AddMetadataEvent(
   scoped_ptr<TraceEvent> trace_event(new TraceEvent);
   trace_event->Initialize(
       0,  // thread_id
-      TraceTicks(), ThreadTicks(), TRACE_EVENT_PHASE_METADATA,
+      TimeTicks(), ThreadTicks(), TRACE_EVENT_PHASE_METADATA,
       &g_category_group_enabled[g_category_metadata], name,
       trace_event_internal::kNoId,  // id
       trace_event_internal::kNoId,  // context_id
@@ -1360,7 +1360,7 @@ void TraceLog::AddMetadataEvent(
 // May be called when a COMPELETE event ends and the unfinished event has been
 // recycled (phase == TRACE_EVENT_PHASE_END and trace_event == NULL).
 std::string TraceLog::EventToConsoleMessage(unsigned char phase,
-                                            const TraceTicks& timestamp,
+                                            const TimeTicks& timestamp,
                                             TraceEvent* trace_event) {
   AutoLock thread_info_lock(thread_info_lock_);
 
@@ -1418,7 +1418,7 @@ void TraceLog::UpdateTraceEventDuration(
   AutoThreadLocalBoolean thread_is_in_trace_event(&thread_is_in_trace_event_);
 
   ThreadTicks thread_now = ThreadNow();
-  TraceTicks now = OffsetNow();
+  TimeTicks now = OffsetNow();
 
   std::string console_message;
   if (*category_group_enabled & ENABLED_FOR_RECORDING) {
@@ -1714,7 +1714,7 @@ ScopedTraceBinaryEfficient::ScopedTraceBinaryEfficient(
             trace_event_internal::kNoId,  // id
             trace_event_internal::kNoId,  // context_id
             static_cast<int>(base::PlatformThread::CurrentId()),  // thread_id
-            base::TraceTicks::Now(),
+            base::TimeTicks::Now(),
             trace_event_internal::kZeroNumArgs,
             nullptr,
             nullptr,