Remove obsolete atomic debugging checks.

media/base/sinc_resampler.h

Index: media/base/sinc_resampler.h
diff --git a/media/base/sinc_resampler.h b/media/base/sinc_resampler.h
index 2d0cdea7a6d43d13cd69447907b877186b678740..af9a3023384c2abfeabf90643ce23480db4f1652 100644
--- a/media/base/sinc_resampler.h
+++ b/media/base/sinc_resampler.h
@@ -5,7 +5,6 @@
 #ifndef MEDIA_BASE_SINC_RESAMPLER_H_
 #define MEDIA_BASE_SINC_RESAMPLER_H_
 
-#include "base/atomic_ref_count.h"
 #include "base/callback.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/aligned_memory.h"
@@ -136,11 +135,6 @@ class MEDIA_EXPORT SincResampler {
   float* r3_;
   float* r4_;
 
-  // Atomic ref count indicating when when we're not currently resampling.  Will
-  // be CHECK'd to find crashes...
-  // TODO(dalecurtis): Remove debug helpers for http://crbug.com/295278
-  base::AtomicRefCount not_currently_resampling_;
-
   DISALLOW_COPY_AND_ASSIGN(SincResampler);
 };