Fix error: unused variable 'kNumTasks'.

base/memory/shared_memory_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/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/shared_memory.h"
 #include "base/process/kill.h"
 #include "base/rand_util.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 15 matching lines @@
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>
 #endif
 
 #if defined(OS_WIN)
 #include "base/win/scoped_handle.h"
 #endif
 
 static const int kNumThreads = 5;
+#if !defined(OS_IOS)  // iOS does not allow multiple processes.
 static const int kNumTasks = 5;
+#endif
 
 namespace base {
 
 namespace {
 
 // Each thread will open the shared memory.  Each thread will take a different 4
 // byte int pointer, and keep changing it, with some small pauses in between.
 // Verify that each thread's value in the shared memory is always correct.
 class MultipleThreadMain : public PlatformThread::Delegate {
  public:
@@ skipping 610 matching lines @@
   SharedMemoryProcessTest::CleanUp();
 }
 
 MULTIPROCESS_TEST_MAIN(SharedMemoryTestMain) {
   return SharedMemoryProcessTest::TaskTestMain();
 }
 
 #endif  // !OS_IOS
 
 }  // namespace base