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

content/browser/renderer_host/media/video_capture_controller.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_controller.h"
 
 #include <set>
 
 #include "base/bind.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 36 matching lines @@
   media::VideoCaptureParams parameters;
 
   // Buffers used by this client.
   std::set<int> buffers;
 
   // State of capture session, controlled by VideoCaptureManager directly.
   bool session_closed;
 };
 
 struct VideoCaptureController::SharedDIB {
-  SharedDIB(base::SharedMemory* ptr)
+  explicit SharedDIB(base::SharedMemory* ptr)
       : shared_memory(ptr),
         references(0) {
   }
 
   ~SharedDIB() {}
 
   // The memory created to be shared with renderer processes.
   scoped_ptr<base::SharedMemory> shared_memory;
 
   // Number of renderer processes which hold this shared memory.
@@ skipping 525 matching lines @@
   base::AutoLock lock(lock_);
   for (DIBMap::iterator dib_it = owned_dibs_.begin();
        dib_it != owned_dibs_.end(); dib_it++) {
     if (dib_it->second->references > 0)
       return true;
   }
   return false;
 }
 
 }  // namespace content