Remove all //blimp code.

blimp/common/proto/helium.proto

Index: blimp/common/proto/helium.proto
diff --git a/blimp/common/proto/helium.proto b/blimp/common/proto/helium.proto
deleted file mode 100644
index e1b2dca405df1d796a92bd39c66c4a412663c280..0000000000000000000000000000000000000000
--- a/blimp/common/proto/helium.proto
+++ /dev/null
@@ -1,60 +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.
-//
-// Over-the-wire message definitions used for the Helium synchronization
-// protocol.
-
-syntax = "proto3";
-
-option optimize_for = LITE_RUNTIME;
-
-package blimp.proto;
-
-// Vector clock that is used to get the partial order of changes.
-// This class is the proto definition of
-// //blimp/net/helium/version_vector.h
-message VersionVectorMessage {
-  uint64 local_revision = 1;
-  uint64 remote_revision = 2;
-}
-
-// Sample proto for test purposes.
-message TestChangesetMessage {
-  int32 value1 = 1;
-  int32 value2 = 2;
-}
-
-// A union of serializable Changeset types. There will be one for each Helium
-// Object that requires serialization.
-message ChangesetMessage {
-  oneof payload {
-    // Sample message for the test
-    TestChangesetMessage test = 1;
-  };
-}
-
-// Message that encapsulates a change for a helium object. It contains
-// information required to restore the object from the time specified in |from|
-// until |to|.
-//
-// This is the main object that will be sent in the Helium transport
-message HeliumMessage {
-  // Routing: Identifies the object to which this message applies.
-  uint64 object_id = 1;
-
-  // Synchronization: Specifies a |changeset|, the sender Revision upon which
-  // the Changeset depends, and the sender Revision that is reached following
-  // application of the Changeset. Note that |changeset| may embed further
-  // Revision information, as necessary for the Syncable to resolve conflicts,
-  // though future optimizations may expose Revision information from
-  // HeliumMessage to the Syncable API directly, for greater efficiency, and
-  // convenience.
-  uint64 start_revision = 2;
-  uint64 end_revision = 3;
-  bytes changeset = 4;
-
-  // Acknowledgement: Indicates the most recent recipient Revision of the object
-  // that the sender is currently aware of.
-  uint64 ack_revision = 5;
-}