Revert of Initial addition of blimp crash client code.

blimp/engine/app/blimp_engine_crash_keys.cc

-// Copyright 2016 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "blimp/engine/app/blimp_engine_crash_keys.h"
-
-#include <vector>
-
-#include "base/debug/crash_logging.h"
-#include "components/crash/core/common/crash_keys.h"
-
-namespace blimp {
-namespace engine {
-
-size_t RegisterEngineCrashKeys() {
-  const std::vector<base::debug::CrashKey> engine_keys = {
-      {::crash_keys::kClientId, ::crash_keys::kSmallSize},
-      {::crash_keys::kChannel, ::crash_keys::kSmallSize},
-      {::crash_keys::kNumVariations, ::crash_keys::kSmallSize},
-      {::crash_keys::kVariations, ::crash_keys::kLargeSize},
-      {"discardable-memory-allocated", ::crash_keys::kSmallSize},
-      {"discardable-memory-free", ::crash_keys::kSmallSize},
-      {"ppapi_path", ::crash_keys::kMediumSize},
-      {"subresource_url", ::crash_keys::kLargeSize},
-      {"total-discardable-memory-allocated", ::crash_keys::kSmallSize}};
-
-  return base::debug::InitCrashKeys(&engine_keys.at(0), engine_keys.size(),
-                                    ::crash_keys::kChunkMaxLength);
-}
-
-}  // namespace engine
-}  // namespace blimp