win: Get Crashpad compiling under VS2015

minidump/minidump_file_writer_test.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 272 matching lines @@
   EXPECT_EQ(kMinidumpStreamTypeMemoryList, directory[4].StreamType);
   EXPECT_TRUE(MinidumpWritableAtLocationDescriptor<MINIDUMP_MEMORY_LIST>(
                   string_file.string(), directory[4].Location));
 }
 
 TEST(MinidumpFileWriter, InitializeFromSnapshot_Exception) {
   // In a 32-bit environment, this will give a “timestamp out of range” warning,
   // but the test should complete without failure.
   const uint32_t kSnapshotTime = 0xfd469ab8;
   MSVC_SUPPRESS_WARNING(4309);  // Truncation of constant value.
+  MSVC_SUPPRESS_WARNING(4838);  // Narrowing conversion.
   const timeval kSnapshotTimeval = { static_cast<time_t>(kSnapshotTime), 0 };
 
   TestProcessSnapshot process_snapshot;
   process_snapshot.SetSnapshotTime(kSnapshotTimeval);
 
   auto system_snapshot = make_scoped_ptr(new TestSystemSnapshot());
   system_snapshot->SetCPUArchitecture(kCPUArchitectureX86_64);
   system_snapshot->SetOperatingSystem(SystemSnapshot::kOperatingSystemMacOSX);
   process_snapshot.SetSystem(system_snapshot.Pass());
 
@@ skipping 133 matching lines @@
   const uint8_t kStream1Value = 0xa5;
   auto stream1 = make_scoped_ptr(
       new TestStream(kStream1Type, kStream1Size, kStream1Value));
   ASSERT_DEATH_CHECK(minidump_file.AddStream(stream1.Pass()),
                      "already present");
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace crashpad