Remove explicit keyword from multi-argument constructors

content/browser/renderer_host/gpu_message_filter.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.
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
 #include "content/browser/renderer_host/gpu_message_filter.h"
 
@@ skipping 34 matching lines @@
 }
 
 // Callbacks used in this file.
 namespace {
 
 class EstablishChannelCallback
     : public CallbackRunner<Tuple3<const IPC::ChannelHandle&,
                                    base::ProcessHandle,
                                    const GPUInfo&> > {
  public:
-  explicit EstablishChannelCallback(GpuMessageFilter* filter,
-                                    IPC::Message* reply) :
-      filter_(filter->AsWeakPtr()),
-      reply_(reply) {
+  EstablishChannelCallback(GpuMessageFilter* filter, IPC::Message* reply)
+      : filter_(filter->AsWeakPtr()),
+        reply_(reply) {
   }
 
   virtual void RunWithParams(const TupleType& params) {
     DispatchToMethod(this, &EstablishChannelCallback::Send, params);
   }
 
   void Send(const IPC::ChannelHandle& channel,
             base::ProcessHandle gpu_process_for_browser,
             const GPUInfo& gpu_info) {
     if (!filter_)
@@ skipping 104 matching lines @@
     return;
   }
 
   host->CreateViewCommandBuffer(
       compositing_surface,
       render_view_id,
       render_process_id_,
       init_params,
       new CreateCommandBufferCallback(this, reply));
 }