Revert of Report lost context from GLES2Implementation based on share group state.

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 "gpu/command_buffer/client/share_group.h"
 
 #include <stdint.h>
 
 #include <stack>
 #include <vector>
@@ skipping 356 matching lines @@
         id_handlers_[i].reset(new StrictIdHandler(i));
       }
     }
   }
   program_info_manager_.reset(new ProgramInfoManager);
   for (auto& range_id_handler : range_id_handlers_) {
     range_id_handler.reset(new RangeIdHandler());
   }
 }
 
-void ShareGroup::Lose() {
-  base::AutoLock hold(lost_lock_);
-  lost_ = true;
-}
-
-bool ShareGroup::IsLost() const {
-  base::AutoLock hold(lost_lock_);
-  return lost_;
-}
-
-void ShareGroup::SetProgramInfoManagerForTesting(ProgramInfoManager* manager) {
+void ShareGroup::set_program_info_manager(ProgramInfoManager* manager) {
   program_info_manager_.reset(manager);
 }
 
 ShareGroup::~ShareGroup() {}
 
 }  // namespace gles2
 }  // namespace gpu