cc/blimp: Remove Initialize and Close messages.

cc/proto/compositor_message_to_impl.proto

 // 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.
 
 syntax = "proto2";
 
 option optimize_for = LITE_RUNTIME;
 
 import "commit_earlyout_reason.proto";
 import "layer_tree_host.proto";
@@ skipping 28 matching lines @@
 
 message CompositorMessageToImpl {
   enum Type {
     // The enum values which are unknown get mapped to the default value, which
     // is zero. This can happen with when the protocol version skewing is
     // different on the client and server.
     // Ignore the messages with type UNKNOWN.
     // see crbug/559338.
     UNKNOWN = 0;
 
-    // Client Initialization: When the remote server starts up it sends a
-    // CompositorMessageToImpl of type INITIALIZE_IMPL to the client. This
-    // message should be processed by the embedder of the client compositor to
-    // create the Remote Client LayerTreeHost. The compositor protocol
-    // guarantees that this will be the first message sent to the client. No
-    // messages can be sent from the client before the server is started.
-    INITIALIZE_IMPL = 1;
-
-    // Client Shutdown: When the remote server is shutting down it sends a
-    // CompositorMessageToImpl of type CLOSE_IMPL to the client. The message
-    // should be processed by the embedder of the client compositor to destroy
-    // the Remote Client LayerTreeHost. This is guaranteed to be the last
-    // message sent to the client. No messages can be sent from the client after
-    // the server has been shutdown.
-    CLOSE_IMPL = 2;
-
-    // Informs the client that a fling animation on the server has stopped.
-    MAIN_THREAD_HAS_STOPPED_FLINGING_ON_IMPL = 3;
-
     // Sent to the client to request a commit. The client will respond with
     // CompositorMessageToMain of type BEGIN_MAIN_FRAME.
     SET_NEEDS_COMMIT = 4;
 
     // Informs the client to start/stop commit requests. The message can be sent
     // any time to the client.
     SET_DEFER_COMMITS = 5;
 
     // Sent in response to a CompositorMessageToMain of type BEGIN_MAIN_FRAME
     // from the client, with the updated state of the LayerTreeHost.
@@ skipping 38 matching lines @@
   optional LayerTreeHost layer_tree_host = 1;
 }
 
 message BeginMainFrameAborted {
   optional CommitEarlyOutReason reason = 1;
 }
 
 message SetNeedsRedraw {
   optional Rect damaged_rect = 1;
 }