Remove explicit keyword from multi-argument constructors

sandbox/src/crosscall_params.h

 // Copyright (c) 2010 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 SANDBOX_SRC_CROSSCALL_PARAMS_H__
 #define SANDBOX_SRC_CROSSCALL_PARAMS_H__
 
 #include <windows.h>
 #include <lmaccess.h>
 
@@ skipping 126 matching lines @@
   // Tells the CrossCall object if it contains InOut parameters.
   void SetIsInOut(bool value) {
     if (value)
       is_in_out_ = 1;
     else
       is_in_out_ = 0;
   }
 
  protected:
   // constructs the IPC call params. Called only from the derived classes
-  explicit CrossCallParams(uint32 tag, size_t params_count)
+  CrossCallParams(uint32 tag, size_t params_count)
       : tag_(tag),
         params_count_(params_count),
         is_in_out_(0) {
   }
 
  private:
   uint32 tag_;
   uint32 is_in_out_;
   CrossCallReturn call_return;
   const size_t params_count_;
@@ skipping 128 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(ActualCallParams);
 };
 
 COMPILE_ASSERT(sizeof(ActualCallParams<1, 1024>) == 1024, bad_size_buffer);
 COMPILE_ASSERT(sizeof(ActualCallParams<2, 1024>) == 1024, bad_size_buffer);
 COMPILE_ASSERT(sizeof(ActualCallParams<3, 1024>) == 1024, bad_size_buffer);
 
 }  // namespace sandbox
 
 #endif  // SANDBOX_SRC_CROSSCALL_PARAMS_H__