cc: Remove all blimp code from cc.

cc/blimp/compositor_proto_state.cc

Index: cc/blimp/compositor_proto_state.cc
diff --git a/cc/blimp/compositor_proto_state.cc b/cc/blimp/compositor_proto_state.cc
deleted file mode 100644
index 4518280012bdcbb241178821ca6a91cb11595594..0000000000000000000000000000000000000000
--- a/cc/blimp/compositor_proto_state.cc
+++ /dev/null
@@ -1,16 +0,0 @@
-// 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 "cc/blimp/compositor_proto_state.h"
-
-#include "cc/output/swap_promise.h"
-#include "cc/proto/compositor_message.pb.h"
-
-namespace cc {
-
-CompositorProtoState::CompositorProtoState() = default;
-
-CompositorProtoState::~CompositorProtoState() = default;
-
-}  // namespace cc