Use a direct include of strings headers in content/browser/, part 1.

content/browser/gamepad/gamepad_platform_data_fetcher_win.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 "content/browser/gamepad/gamepad_platform_data_fetcher_win.h"
 
 #include <dinput.h>
 #include <dinputd.h>
 
 #include "base/debug/trace_event.h"
-#include "base/stringprintf.h"
+#include "base/strings/stringprintf.h"
+#include "content/common/gamepad_hardware_buffer.h"
 #include "content/common/gamepad_messages.h"
-#include "content/common/gamepad_hardware_buffer.h"
 
 // This was removed from the Windows 8 SDK for some reason.
 // We need it so we can get state for axes without worrying if they
 // exist.
 #ifndef DIDFT_OPTIONAL
 #define DIDFT_OPTIONAL 0x80000000
 #endif
 
 namespace content {
 
@@ skipping 459 matching lines @@
     return false;
   xinput_get_state_ = reinterpret_cast<XInputGetStateFunc>(
       xinput_dll_.GetFunctionPointer("XInputGetState"));
   if (!xinput_get_state_)
     return false;
   xinput_enable_(true);
   return true;
 }
 
 }  // namespace content