Kills TraceTicks, which was functionally the same as TimeTicks

gpu/command_buffer/client/gles2_implementation.cc

 // Copyright (c) 2012 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.
 
 // A class to emulate GLES2 over command buffers.
 
 #include "gpu/command_buffer/client/gles2_implementation.h"
 
 #include <GLES2/gl2.h>
 #include <GLES2/gl2ext.h>
@@ skipping 753 matching lines @@
       return true;
     case GL_READ_FRAMEBUFFER_BINDING:
       if (IsChromiumFramebufferMultisampleAvailable()) {
         *params = bound_read_framebuffer_;
         return true;
       }
       break;
     case GL_TIMESTAMP_EXT:
       // We convert all GPU timestamps to CPU time.
       *params = base::saturated_cast<GLint>(
-          (base::TraceTicks::Now() - base::TraceTicks()).InMicroseconds()
+          (base::TimeTicks::Now() - base::TimeTicks()).InMicroseconds()
           * base::Time::kNanosecondsPerMicrosecond);
       return true;
     case GL_GPU_DISJOINT_EXT:
       *params = static_cast<GLint>(query_tracker_->CheckAndResetDisjoint());
       return true;
 
     // Non-cached parameters.
     case GL_ALIASED_LINE_WIDTH_RANGE:
     case GL_ALIASED_POINT_SIZE_RANGE:
     case GL_ALPHA_BITS:
@@ skipping 277 matching lines @@
       *params = capabilities_.max_element_index;
       return true;
     case GL_MAX_SERVER_WAIT_TIMEOUT:
       *params = capabilities_.max_server_wait_timeout;
       return true;
     case GL_MAX_UNIFORM_BLOCK_SIZE:
       *params = capabilities_.max_uniform_block_size;
       return true;
     case GL_TIMESTAMP_EXT:
       // We convert all GPU timestamps to CPU time.
-      *params = (base::TraceTicks::Now() - base::TraceTicks()).InMicroseconds()
+      *params = (base::TimeTicks::Now() - base::TimeTicks()).InMicroseconds()
                 * base::Time::kNanosecondsPerMicrosecond;
       return true;
     default:
       break;
   }
   GLint value;
   if (!GetHelper(pname, &value)) {
     return false;
   }
   *params = static_cast<GLint64>(value);
@@ skipping 5279 matching lines @@
   CheckGLError();
 }
 
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "gpu/command_buffer/client/gles2_implementation_impl_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu