Include implicit_cast.h at all users of it.

util/net/http_body.cc

 // Copyright 2014 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
 #include "util/net/http_body.h"
 
 #include <string.h>
 
 #include <algorithm>
 #include <limits>
 
 #include "base/logging.h"
 #include "base/stl_util.h"
+#include "util/misc/implicit_cast.h"
 
 namespace crashpad {
 
 StringHTTPBodyStream::StringHTTPBodyStream(const std::string& string)
     : HTTPBodyStream(), string_(string), bytes_read_() {
 }
 
 StringHTTPBodyStream::~StringHTTPBodyStream() {
 }
 
@@ skipping 71 matching lines @@
     } else if (this_read < 0) {
       return this_read;
     }
     bytes_copied += this_read;
   }
 
   return bytes_copied;
 }
 
 }  // namespace crashpad