Remove "ScopedHandleBase<H>::operator H() const"

mojo/public/system/core_cpp.h

 // Copyright 2013 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 MOJO_PUBLIC_SYSTEM_CORE_CPP_H_
 #define MOJO_PUBLIC_SYSTEM_CORE_CPP_H_
 
 #include <assert.h>
 
 #include <limits>
@@ skipping 16 matching lines @@
   ScopedHandleBase() {}
   ~ScopedHandleBase() { CloseIfNecessary(); }
 
   // Move-only constructor and operator=.
   ScopedHandleBase(RValue other) : handle_(other.object->release()) {}
   ScopedHandleBase& operator=(RValue other) {
     handle_ = other.object->release();
     return *this;
   }
 
-  operator HandleType() const { return handle_; }
   const HandleType& get() const { return handle_; }
 
   void swap(ScopedHandleBase& other) {
     handle_.swap(other.handle_);
   }
 
   HandleType release() MOJO_WARN_UNUSED_RESULT {
     HandleType rv;
     rv.swap(handle_);
     return rv;
@@ skipping 160 matching lines @@
                                  MojoReadMessageFlags flags) {
   return MojoReadMessage(message_pipe.value(),
                          bytes, num_bytes,
                          handles, num_handles,
                          flags);
 }
 
 }  // namespace mojo
 
 #endif  // MOJO_PUBLIC_SYSTEM_CORE_CPP_H_