Use implicit_cast<> instead of static_cast<> whenever possible

util/mach/mach_message_server.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,
@@ skipping 77 matching lines @@
   mach_msg_options_t timeout_options = MACH_RCV_TIMEOUT | MACH_SEND_TIMEOUT |
                                        MACH_RCV_INTERRUPT | MACH_SEND_INTERRUPT;
 
   uint64_t deadline;
   if (nonblocking == kNonblocking) {
     options |= timeout_options;
     deadline = 0;
   } else if (timeout_ms != MACH_MSG_TIMEOUT_NONE) {
     options |= timeout_options;
     deadline = ClockMonotonicNanoseconds() +
-               static_cast<uint64_t>(timeout_ms) * kNanosecondsPerMillisecond;
+               implicit_cast<uint64_t>(timeout_ms) * kNanosecondsPerMillisecond;
   } else {
     options &= ~timeout_options;
     deadline = 0;
   }
 
   mach_msg_size_t trailer_alloc = REQUESTED_TRAILER_SIZE(options);
   mach_msg_size_t max_request_size = interface->MachMessageServerRequestSize();
   mach_msg_size_t request_alloc = round_page(max_request_size + trailer_alloc);
   mach_msg_size_t request_size = (options & MACH_RCV_LARGE)
                                      ? request_alloc
@@ skipping 148 matching lines @@
         // persistent mode, and just return success when not in persistent mode.
         return (persistent == kPersistent) ? MACH_RCV_TIMED_OUT : kr;
       }
     }
   } while (persistent == kPersistent);
 
   return kr;
 }
 
 }  // namespace crashpad