win: Get Crashpad compiling under VS2015

snapshot/win/system_snapshot_win_test.cc

 // Copyright 2015 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 105 matching lines @@
   std::string daylight_name;
 
   system_snapshot().TimeZone(&dst_status,
                              &standard_offset_seconds,
                              &daylight_offset_seconds,
                              &standard_name,
                              &daylight_name);
 
   // |standard_offset_seconds| gives seconds east of UTC, and |timezone| gives
   // seconds west of UTC.
+#if _MSC_VER >= 1900
+  long timezone = 0;
+  _get_timezone(&timezone);
+#endif
   EXPECT_EQ(-timezone, standard_offset_seconds);
 
   // In contemporary usage, most time zones have an integer hour offset from
   // UTC, although several are at a half-hour offset, and two are at 15-minute
   // offsets. Throughout history, other variations existed. See
   // http://www.timeanddate.com/time/time-zones-interesting.html.
   EXPECT_EQ(0, standard_offset_seconds % (15 * 60))
       << "standard_offset_seconds " << standard_offset_seconds;
 
   if (dst_status == SystemSnapshot::kDoesNotObserveDaylightSavingTime) {
@@ skipping 12 matching lines @@
       FAIL() << "dst_delta_seconds " << dst_delta_seconds;
     }
 
     EXPECT_NE(standard_name, daylight_name);
   }
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace crashpad