Remove explicit keyword from multi-argument constructors

webkit/tools/test_shell/simple_file_writer.cc

 // Copyright (c) 2011 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 "webkit/tools/test_shell/simple_file_writer.h"
 
 #include "base/logging.h"
 #include "base/message_loop_proxy.h"
 #include "net/url_request/url_request_context.h"
 #include "webkit/fileapi/file_system_callback_dispatcher.h"
@@ skipping 13 matching lines @@
 using WebKit::WebURL;
 
 net::URLRequestContext* SimpleFileWriter::request_context_ = NULL;
 
 // Helper class to proxy to write and truncate calls to the IO thread,
 // and to proxy the results back to the main thead. There is a one-to-one
 // relationship between SimpleFileWriters and IOThreadBackends.
 class SimpleFileWriter::IOThreadProxy
     : public base::RefCountedThreadSafe<SimpleFileWriter::IOThreadProxy> {
  public:
-  explicit IOThreadProxy(const base::WeakPtr<SimpleFileWriter>& simple_writer,
-                         FileSystemContext* file_system_context)
+  IOThreadProxy(const base::WeakPtr<SimpleFileWriter>& simple_writer,
+                FileSystemContext* file_system_context)
       : simple_writer_(simple_writer),
         operation_(NULL),
         file_system_context_(file_system_context) {
     // The IO thread needs to be running for this class to work.
     SimpleResourceLoaderBridge::EnsureIOThread();
     io_thread_ = SimpleResourceLoaderBridge::GetIoThread();
     main_thread_ = base::MessageLoopProxy::CreateForCurrentThread();
   }
 
   virtual ~IOThreadProxy() {
@@ skipping 150 matching lines @@
 }
 
 void SimpleFileWriter::DoWrite(
     const GURL& path, const GURL& blob_url, int64 offset) {
   io_thread_proxy_->Write(path, blob_url, offset);
 }
 
 void SimpleFileWriter::DoCancel() {
   io_thread_proxy_->Cancel();
 }