Delete some unused code found by -Wunused-function

base/bind_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/bind.h"
 
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 161 matching lines @@
 }
 
 int ArrayGet(const int array[], int n) {
   return array[n];
 }
 
 int Sum(int a, int b, int c, int d, int e, int f) {
   return a + b + c + d + e + f;
 }
 
-void OutputSum(int* output, int a, int b, int c, int d, int e) {
-  *output = a + b + c + d + e;
-}
-
 const char* CStringIdentity(const char* s) {
   return s;
 }
 
 int GetCopies(const CopyCounter& counter) {
   return counter.copies();
 }
 
 int UnwrapNoRefParent(NoRefParent p) {
   return p.value;
@@ skipping 601 matching lines @@
   Callback<int(void)> fastcall_cb = Bind(&FastCallFunc, 1);
   EXPECT_EQ(1, fastcall_cb.Run());
 
   Callback<int(void)> stdcall_cb = Bind(&StdCallFunc, 2);
   EXPECT_EQ(2, stdcall_cb.Run());
 }
 #endif
 
 }  // namespace
 }  // namespace base