Remove a bunch of dead fields found by Scythe.

media/audio/cross_process_notification_unittest.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 "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/shared_memory.h"
 #include "base/stl_util.h"
 #include "base/test/multiprocess_test.h"
 #include "base/threading/platform_thread.h"
@@ skipping 97 matching lines @@
       int signaled = waiter.Wait();
       ++shared_data_[signaled];
       (*notifiers_)[signaled]->Signal();
     }
   }
 
  private:
   size_t* shared_data_;
   size_t repeats_;
   const CrossProcessNotification::Notifications* notifiers_;
-  size_t count_;
   DISALLOW_COPY_AND_ASSIGN(MultiNotifierWorker);
 };
 
 // A fixed array of bool flags.  Each flag uses 1 bit.  Use sizeof(FlagArray)
 // to determine how much memory you need.  The number of flags will therefore
 // be sizeof(FlagArray) * 8.
 // We use 'struct' to signify that this structures represents compiler
 // independent structured data.  I.e. you must be able to map this class
 // to a piece of shared memory of size sizeof(FlagArray) and be able to
 // use the class.  No vtables etc.
@@ skipping 327 matching lines @@
 
   ipc->ready = true;
 
   a.Signal();
   a.Wait();
 
   int exit_code = -1;
   base::WaitForExitCode(process, &exit_code);
   EXPECT_EQ(0, exit_code);
 }