Copy Crashpad into the Chrome tree instead of importing it via DEPS

third_party/crashpad/crashpad/snapshot/win/crashpad_snapshot_test_image_reader.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,
+// 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 <windows.h>
+
+#include "base/logging.h"
+#include "util/file/file_io.h"
+#include "util/win/scoped_handle.h"
+
+int wmain(int argc, wchar_t* argv[]) {
+  CHECK_EQ(argc, 2);
+
+  crashpad::ScopedKernelHANDLE done(CreateEvent(nullptr, true, false, argv[1]));
+
+  PCHECK(LoadLibrary(L"crashpad_snapshot_test_image_reader_module.dll"))
+      << "LoadLibrary";
+
+  HANDLE out = GetStdHandle(STD_OUTPUT_HANDLE);
+  PCHECK(out != INVALID_HANDLE_VALUE) << "GetStdHandle";
+  char c = ' ';
+  crashpad::CheckedWriteFile(out, &c, sizeof(c));
+
+  CHECK_EQ(WAIT_OBJECT_0, WaitForSingleObject(done.get(), INFINITE));
+
+  return 0;
+}
+