Kills TraceTicks, which was functionally the same as TimeTicks

ui/gl/gpu_timing.cc

 // Copyright (c) 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/gl/gpu_timing.h"
 
 #include "base/time/time.h"
 #include "ui/gl/gl_bindings.h"
 #include "ui/gl/gl_context.h"
 #include "ui/gl/gl_version_info.h"
@@ skipping 21 matching lines @@
   uint32_t GetDisjointCount();
   int64 CalculateTimerOffset();
 
   scoped_refptr<QueryResult> BeginElapsedTimeQuery();
   void EndElapsedTimeQuery(scoped_refptr<QueryResult> result);
 
   scoped_refptr<QueryResult> DoTimeStampQuery();
 
   int64 GetCurrentCPUTime() {
     return cpu_time_for_testing_.is_null()
-           ? (base::TraceTicks::Now() - base::TraceTicks()).InMicroseconds()
+           ? (base::TimeTicks::Now() - base::TimeTicks()).InMicroseconds()
            : cpu_time_for_testing_.Run();
   }
   void SetCpuTimeForTesting(const base::Callback<int64(void)>& cpu_time) {
     cpu_time_for_testing_ = cpu_time;
   }
 
   void UpdateQueryResults();
 
   int64_t GetMaxTimeStamp() { return max_time_stamp_; }
   void UpdateMaxTimeStamp(int64_t value) {
@@ skipping 571 matching lines @@
 
 void GPUTimingClient::ForceTimeElapsedQuery() {
   DCHECK(gpu_timing_);
   gpu_timing_->ForceTimeElapsedQuery();
 }
 
 GPUTimingClient::~GPUTimingClient() {
 }
 
 }  // namespace gfx