Revert of discardable_memory: Using mojo IPC to replace Chrome IPC

components/discardable_memory/common/discardable_shared_memory_id.h

Index: components/discardable_memory/common/discardable_shared_memory_id.h
diff --git a/components/discardable_memory/common/discardable_shared_memory_id.h b/components/discardable_memory/common/discardable_shared_memory_id.h
new file mode 100644
index 0000000000000000000000000000000000000000..53f98a57a3424553e7fef3d17d903c237c765cb1
--- /dev/null
+++ b/components/discardable_memory/common/discardable_shared_memory_id.h
@@ -0,0 +1,17 @@
+// 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.
+
+#ifndef COMPONENTS_DISCARDABLE_MEMORY_COMMON_DISCARDABLE_SHARED_MEMORY_ID_H_
+#define COMPONENTS_DISCARDABLE_MEMORY_COMMON_DISCARDABLE_SHARED_MEMORY_ID_H_
+
+#include <stddef.h>
+#include <stdint.h>
+
+namespace discardable_memory {
+
+typedef int32_t DiscardableSharedMemoryId;
+
+}  // namespace discardable_memory
+
+#endif  // COMPONENTS_DISCARDABLE_MEMORY_COMMON_DISCARDABLE_SHARED_MEMORY_ID_H_