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

content/browser/accessibility/browser_accessibility.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/accessibility/browser_accessibility.h"
 
 #include "base/logging.h"
-#include "base/string_number_conversions.h"
-#include "base/string_util.h"
+#include "base/strings/string_number_conversions.h"
+#include "base/strings/string_util.h"
 #include "content/browser/accessibility/browser_accessibility_manager.h"
 #include "content/common/accessibility_messages.h"
 
 namespace content {
 
 typedef AccessibilityNodeData::BoolAttribute BoolAttribute;
 typedef AccessibilityNodeData::FloatAttribute FloatAttribute;
 typedef AccessibilityNodeData::IntAttribute IntAttribute;
 typedef AccessibilityNodeData::StringAttribute StringAttribute;
 
@@ skipping 296 matching lines @@
     return name_;
   }
 
   string16 result;
   for (size_t i = 0; i < children_.size(); ++i)
     result += children_[i]->GetTextRecursive();
   return result;
 }
 
 }  // namespace content