Use a direct include of strings headers in ipc/, jingle/, media/.

media/base/vector_math_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.
 
 // MSVC++ requires this to be set before any other includes to get M_PI.
 #define _USE_MATH_DEFINES
 #include <cmath>
 
 #include "base/command_line.h"
 #include "base/cpu.h"
 #include "base/memory/aligned_memory.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/string_number_conversions.h"
+#include "base/strings/string_number_conversions.h"
 #include "base/strings/stringize_macros.h"
 #include "base/time.h"
 #include "media/base/vector_math.h"
 #include "media/base/vector_math_testing.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using base::TimeTicks;
 using std::fill;
 
 // Command line switch for runtime adjustment of benchmark iterations.
@@ skipping 258 matching lines @@
          STRINGIZE(FMUL_FUNC) " (unaligned).\n",
          total_time_optimized_aligned_ms,
          total_time_c_ms / total_time_optimized_aligned_ms,
          total_time_optimized_unaligned_ms / total_time_optimized_aligned_ms);
 #endif
 }
 
 #undef FMUL_FUNC
 
 }  // namespace media