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

third_party/crashpad/crashpad/util/stdlib/objc.h

Index: third_party/crashpad/crashpad/util/stdlib/objc.h
diff --git a/third_party/crashpad/crashpad/util/stdlib/objc.h b/third_party/crashpad/crashpad/util/stdlib/objc.h
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+// 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,
+// 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.
+
+#ifndef CRASHPAD_UTIL_STDLIB_OBJC_H_
+#define CRASHPAD_UTIL_STDLIB_OBJC_H_
+
+#include <AvailabilityMacros.h>
+#include <objc/objc.h>
+
+#if MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_8
+
+// In order for the @NO and @YES literals to work, NO and YES must be defined as
+// __objc_no and __objc_yes. See
+// http://llvm.org/releases/3.1/tools/clang/docs/ObjectiveCLiterals.html .
+//
+// NO and YES are defined properly for this purpose in the 10.8 SDK, but not in
+// earlier SDKs. Because this code is never expected to be compiled with a
+// compiler that does not understand the modern forms of these boolean
+// constants, but it may be built with an older SDK, replace the outdated SDK
+// definitions unconditionally.
+#undef NO
+#undef YES
+#define NO __objc_no
+#define YES __objc_yes
+
+#endif
+
+#endif  // CRASHPAD_UTIL_STDLIB_OBJC_H_