Remove explicit keyword from multi-argument constructors

base/win/scoped_variant.h

Index: base/win/scoped_variant.h
diff --git a/base/win/scoped_variant.h b/base/win/scoped_variant.h
index 11ffa3ecc3200d90e096bb32b82af45bcfb84ca7..16a52ec086d35c6d48a0f2855abcd3404145bedf 100644
--- a/base/win/scoped_variant.h
+++ b/base/win/scoped_variant.h
@@ -38,7 +38,7 @@ class BASE_API ScopedVariant {
   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).