Remove explicit keyword from multi-argument constructors

base/win/scoped_variant.h

 // 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.
 
 #ifndef BASE_WIN_SCOPED_VARIANT_H_
 #define BASE_WIN_SCOPED_VARIANT_H_
 #pragma once
 
 #include <windows.h>
 #include <oleauto.h>
@@ skipping 20 matching lines @@
     // This is equivalent to what VariantInit does, but less code.
     var_.vt = VT_EMPTY;
   }
 
   // Constructor to create a new VT_BSTR VARIANT.
   // NOTE: Do not pass a BSTR to this constructor expecting ownership to
   // be transferred
   explicit ScopedVariant(const wchar_t* str);
 
   // Creates a new VT_BSTR variant of a specified length.
-  explicit ScopedVariant(const wchar_t* str, UINT length);
+  ScopedVariant(const wchar_t* str, UINT length);
 
   // Creates a new integral type variant and assigns the value to
   // VARIANT.lVal (32 bit sized field).
   explicit ScopedVariant(int value, VARTYPE vt = VT_I4);
 
   // Creates a new double-precision type variant.  |vt| must be either VT_R8
   // or VT_DATE.
   explicit ScopedVariant(double value, VARTYPE vt = VT_R8);
 
   // VT_DISPATCH
@@ skipping 106 matching lines @@
   // Use the Compare method instead.
   bool operator==(const ScopedVariant& var) const;
   bool operator!=(const ScopedVariant& var) const;
   DISALLOW_COPY_AND_ASSIGN(ScopedVariant);
 };
 
 }  // namespace win
 }  // namesoace base
 
 #endif  // BASE_WIN_SCOPED_VARIANT_H_