Add missing (and remove superfluous) 'explicit' from constructors.

content/browser/renderer_host/media/video_capture_host.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/renderer_host/media/video_capture_host.h"
 
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/stl_util.h"
 #include "content/browser/browser_main_loop.h"
 #include "content/browser/renderer_host/media/media_stream_manager.h"
 #include "content/browser/renderer_host/media/video_capture_manager.h"
 #include "content/common/media/video_capture_messages.h"
 
 namespace content {
 
 struct VideoCaptureHost::Entry {
-  Entry(VideoCaptureController* controller)
+  explicit Entry(VideoCaptureController* controller)
       : controller(controller) {}
 
   ~Entry() {}
 
   scoped_refptr<VideoCaptureController> controller;
 };
 
 VideoCaptureHost::VideoCaptureHost() {}
 
 VideoCaptureHost::~VideoCaptureHost() {}
@@ skipping 244 matching lines @@
   delete it->second;
   entries_.erase(controller_id);
 }
 
 VideoCaptureManager* VideoCaptureHost::GetVideoCaptureManager() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
   return BrowserMainLoop::GetMediaStreamManager()->video_capture_manager();
 }
 
 }  // namespace content