Use a direct include of strings headers in base/.

base/debug/trace_event_android.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/debug/trace_event_impl.h"
 
 #include <fcntl.h>
 
 #include "base/debug/trace_event.h"
 #include "base/format_macros.h"
 #include "base/logging.h"
-#include "base/stringprintf.h"
+#include "base/strings/stringprintf.h"
 
 namespace {
 
 int g_atrace_fd = -1;
 const char* kATraceMarkerFile = "/sys/kernel/debug/tracing/trace_marker";
 
 void WriteEvent(
     char phase,
     const char* category_group,
     const char* name,
@@ skipping 126 matching lines @@
   const char* category_group = GetCategoryGroupName(category_group_enabled);
   if (strncmp(category_group, TRACE_DISABLED_BY_DEFAULT(""),
               strlen(TRACE_DISABLED_BY_DEFAULT(""))) == 0)
     return;
 
   *category_group_enabled |= ATRACE_ENABLED;
 }
 
 }  // namespace debug
 }  // namespace base