Convert //chrome/browser/chromeos from scoped_ptr to std::unique_ptr

chrome/browser/chromeos/fileapi/external_file_url_request_job.h

Index: chrome/browser/chromeos/fileapi/external_file_url_request_job.h
diff --git a/chrome/browser/chromeos/fileapi/external_file_url_request_job.h b/chrome/browser/chromeos/fileapi/external_file_url_request_job.h
index 04dd0d4a2d48cef4774f4aa951331fb4ac50a750..61b6dd46db32be2dd1f0438d71f672d55ccf78ae 100644
--- a/chrome/browser/chromeos/fileapi/external_file_url_request_job.h
+++ b/chrome/browser/chromeos/fileapi/external_file_url_request_job.h
@@ -51,9 +51,10 @@ class ExternalFileURLRequestJob : public net::URLRequestJob {
   typedef base::Callback<void(
       net::Error,
       const scoped_refptr<storage::FileSystemContext>& file_system_context,
-      scoped_ptr<IsolatedFileSystemScope> isolated_file_system_scope,
+      std::unique_ptr<IsolatedFileSystemScope> isolated_file_system_scope,
       const storage::FileSystemURL& file_system_url,
-      const std::string& mime_type)> HelperCallback;
+      const std::string& mime_type)>
+      HelperCallback;
 
   ExternalFileURLRequestJob(void* profile_id,
                             net::URLRequest* request,
@@ -81,7 +82,7 @@ class ExternalFileURLRequestJob : public net::URLRequestJob {
   void OnHelperResultObtained(
       net::Error error,
       const scoped_refptr<storage::FileSystemContext>& file_system_context,
-      scoped_ptr<IsolatedFileSystemScope> isolated_file_system_scope,
+      std::unique_ptr<IsolatedFileSystemScope> isolated_file_system_scope,
       const storage::FileSystemURL& file_system_url,
       const std::string& mime_type);
 
@@ -103,10 +104,10 @@ class ExternalFileURLRequestJob : public net::URLRequestJob {
   int64_t remaining_bytes_;
 
   scoped_refptr<storage::FileSystemContext> file_system_context_;
-  scoped_ptr<IsolatedFileSystemScope> isolated_file_system_scope_;
+  std::unique_ptr<IsolatedFileSystemScope> isolated_file_system_scope_;
   storage::FileSystemURL file_system_url_;
   std::string mime_type_;
-  scoped_ptr<storage::FileStreamReader> stream_reader_;
+  std::unique_ptr<storage::FileStreamReader> stream_reader_;
   GURL redirect_url_;
 
   // This should remain the last member so it'll be destroyed first and