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

third_party/crashpad/crashpad/util/thread/thread_posix.cc

Index: third_party/crashpad/crashpad/util/thread/thread_posix.cc
diff --git a/third_party/crashpad/crashpad/util/thread/thread_posix.cc b/third_party/crashpad/crashpad/util/thread/thread_posix.cc
new file mode 100644
index 0000000000000000000000000000000000000000..7142c78685c6f2d6d62591a86b558ce04dd158b1
--- /dev/null
+++ b/third_party/crashpad/crashpad/util/thread/thread_posix.cc
@@ -0,0 +1,41 @@
+// 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 "util/thread/thread.h"
+
+#include "base/logging.h"
+
+namespace crashpad {
+
+void Thread::Start() {
+  DCHECK(!platform_thread_);
+  int rv = pthread_create(&platform_thread_, nullptr, ThreadEntryThunk, this);
+  PCHECK(0 == rv);
+}
+
+void Thread::Join() {
+  DCHECK(platform_thread_);
+  int rv = pthread_join(platform_thread_, nullptr);
+  PCHECK(0 == rv);
+  platform_thread_ = 0;
+}
+
+// static
+void* Thread::ThreadEntryThunk(void* argument) {
+  Thread* self = reinterpret_cast<Thread*>(argument);
+  self->ThreadMain();
+  return nullptr;
+}
+
+}  // namespace crashpad