Remove all //blimp code.

blimp/common/proto/blob_cache.proto

Index: blimp/common/proto/blob_cache.proto
diff --git a/blimp/common/proto/blob_cache.proto b/blimp/common/proto/blob_cache.proto
deleted file mode 100644
index dbf6a384ba2d0162225377e08ab4ec182613dfd9..0000000000000000000000000000000000000000
--- a/blimp/common/proto/blob_cache.proto
+++ /dev/null
@@ -1,19 +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.
-//
-// Message definitions related to the BlobCache.
-
-syntax = "proto2";
-
-option optimize_for = LITE_RUNTIME;
-
-package blimp;
-
-// An representation sent from the engine to the client for retrieving an image
-// from the cache or reading from |payload|.
-message BlobCacheImageMetadata {
-  optional bytes id = 1;
-  optional int32 width = 2;
-  optional int32 height = 3;
-}