Update crashpad_handler man page to document all options

handler/mac/main.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 27 matching lines @@
 namespace {
 
 void Usage(const std::string& me) {
   fprintf(stderr,
 "Usage: %s [OPTION]...\n"
 "Crashpad's exception handler server.\n"
 "\n"
 "      --annotation=KEY=VALUE  set a process annotation in each crash report\n"
 "      --database=PATH         store the crash report database at PATH\n"
 "      --handshake-fd=FD       establish communication with the client over FD\n"
-"      --url=URL               send crash reports to this Breakpad server URL\n"
+"      --url=URL               send crash reports to this Breakpad server URL,\n"
+"                              only if uploads are enabled for the database\n"
 "      --help                  display this help and exit\n"
 "      --version               output version information and exit\n",
           me.c_str());
   ToolSupport::UsageTail(me);
 }
 
 int HandlerMain(int argc, char* argv[]) {
   const std::string me(basename(argv[0]));
 
   enum OptionFlags {
@@ skipping 122 matching lines @@
 
   return EXIT_SUCCESS;
 }
 
 }  // namespace
 }  // namespace crashpad
 
 int main(int argc, char* argv[]) {
   return crashpad::HandlerMain(argc, argv);
 }