Fix a bunch of IWYU violators that don't include scoped_ptr.h

chrome/browser/devtools/devtools_file_watcher.cc

 // Copyright (c) 2015 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 "chrome/browser/devtools/devtools_file_watcher.h"
 
 #include <algorithm>
 #include <map>
 #include <set>
 
 #include "base/bind.h"
 #include "base/files/file_enumerator.h"
 #include "base/files/file_path.h"
 #include "base/files/file_path_watcher.h"
 #include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
 #include "content/public/browser/browser_thread.h"
 
 using content::BrowserThread;
 
 static int kFirstThrottleTimeout = 10;
 static int kDefaultThrottleTimeout = 200;
 
 // DevToolsFileWatcher::SharedFileWatcher --------------------------------------
 
 class DevToolsFileWatcher::SharedFileWatcher :
@@ skipping 146 matching lines @@
 
 void DevToolsFileWatcher::AddWatch(const base::FilePath& path) {
   DCHECK_CURRENTLY_ON(BrowserThread::FILE);
   shared_watcher_->AddWatch(path);
 }
 
 void DevToolsFileWatcher::RemoveWatch(const base::FilePath& path) {
   DCHECK_CURRENTLY_ON(BrowserThread::FILE);
   shared_watcher_->RemoveWatch(path);
 }