android: Enable -Wunused-const-variable.

gpu/command_buffer/client/cmd_buffer_helper.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.
 
 // This file contains the implementation of the command buffer helper class.
 
 #include "gpu/command_buffer/client/cmd_buffer_helper.h"
 #include "gpu/command_buffer/common/command_buffer.h"
 #include "gpu/command_buffer/common/trace_event.h"
 
 namespace gpu {
 
-namespace {
 const int kCommandsPerFlushCheck = 100;
+
+#if !defined(OS_ANDROID)
 const double kFlushDelay = 1.0 / (5.0 * 60.0);
-}
+#endif
 
 CommandBufferHelper::CommandBufferHelper(CommandBuffer* command_buffer)
     : command_buffer_(command_buffer),
       ring_buffer_id_(-1),
       ring_buffer_size_(0),
       entries_(NULL),
       total_entry_count_(0),
       token_(0),
       put_(0),
       last_put_sent_(0),
@@ skipping 240 matching lines @@
   CommandBufferEntry* space = &entries_[put_];
   put_ += entries;
   GPU_DCHECK_LE(put_, total_entry_count_);
   if (put_ == total_entry_count_) {
     put_ = 0;
   }
   return space;
 }
 
 }  // namespace gpu