Purge ImplementsThreadSafeReferenceCounting() from the codebase now that Task is dead.

gpu/command_buffer/client/share_group.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.
 
 #include "../client/atomicops.h"
 #include "../client/share_group.h"
 #include "../client/gles2_implementation.h"
 #include "../client/program_info_manager.h"
 #include "../common/id_allocator.h"
 #include "../common/logging.h"
@@ skipping 179 matching lines @@
 
  private:
    IdHandlerInterface* id_handler_;
    Lock lock_;
 };
 
 ShareGroup::ShareGroup(bool share_resources, bool bind_generates_resource)
     : sharing_resources_(share_resources),
       bind_generates_resource_(bind_generates_resource),
       gles2_(NULL) {
-  GPU_CHECK(ShareGroup::ImplementsThreadSafeReferenceCounting());
-
   if (bind_generates_resource) {
     for (int i = 0; i < id_namespaces::kNumIdNamespaces; ++i) {
       if (i == id_namespaces::kProgramsAndShaders) {
         id_handlers_[i].reset(new ThreadSafeIdHandlerWrapper(
             new NonReusedIdHandler()));
       } else {
         id_handlers_[i].reset(new ThreadSafeIdHandlerWrapper(
             new IdHandler()));
       }
     }
@@ skipping 22 matching lines @@
 
 ShareGroup::~ShareGroup() {
   for (int i = 0; i < id_namespaces::kNumIdNamespaces; ++i) {
     id_handlers_[i]->Destroy(gles2_);
     id_handlers_[i].reset();
   }
 }
 
 }  // namespace gles2
 }  // namespace gpu