Add missing (and remove superfluous) 'explicit' from constructors.

gpu/command_buffer/service/buffer_manager.h

 // 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.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_BUFFER_MANAGER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_BUFFER_MANAGER_H_
 
 #include <map>
 #include "base/basictypes.h"
 #include "base/hash_tables.h"
@@ skipping 141 matching lines @@
 
     // A copy of the data in the buffer. This data is only kept if the target
     // is backed_ = true.
     scoped_array<int8> shadow_;
 
     // A map of ranges to the highest value in that range of a certain type.
     typedef std::map<Range, GLuint, Range::Less> RangeToMaxValueMap;
     RangeToMaxValueMap range_set_;
   };
 
-  BufferManager(MemoryTracker* memory_tracker);
+  explicit BufferManager(MemoryTracker* memory_tracker);
   ~BufferManager();
 
   // Must call before destruction.
   void Destroy(bool have_context);
 
   // Creates a BufferInfo for the given buffer.
   void CreateBufferInfo(GLuint client_id, GLuint service_id);
 
   // Gets the buffer info for the given buffer.
   BufferInfo* GetBufferInfo(GLuint client_id);
@@ skipping 37 matching lines @@
 
   bool have_context_;
 
   DISALLOW_COPY_AND_ASSIGN(BufferManager);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_BUFFER_MANAGER_H_