Remove all blimp client code.

blimp/client/core/render_widget/mock_render_widget_feature_delegate.cc

Index: blimp/client/core/render_widget/mock_render_widget_feature_delegate.cc
diff --git a/blimp/client/core/render_widget/mock_render_widget_feature_delegate.cc b/blimp/client/core/render_widget/mock_render_widget_feature_delegate.cc
deleted file mode 100644
index 2273bb64b48c607099778ead7235dc6f26a30983..0000000000000000000000000000000000000000
--- a/blimp/client/core/render_widget/mock_render_widget_feature_delegate.cc
+++ /dev/null
@@ -1,21 +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 "blimp/client/core/render_widget/mock_render_widget_feature_delegate.h"
-
-namespace blimp {
-namespace client {
-
-MockRenderWidgetFeatureDelegate::MockRenderWidgetFeatureDelegate() {}
-
-MockRenderWidgetFeatureDelegate::~MockRenderWidgetFeatureDelegate() {}
-
-void MockRenderWidgetFeatureDelegate::OnCompositorMessageReceived(
-    int render_widget_id,
-    std::unique_ptr<cc::proto::CompositorMessage> message) {
-  MockableOnCompositorMessageReceived(render_widget_id, message.get());
-}
-
-}  // namespace client
-}  // namespace blimp