Remove all blimp client code.

blimp/client/test/compositor/test_blimp_embedder_compositor.cc

-// 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/test/compositor/test_blimp_embedder_compositor.h"
-
-#include <memory>
-
-#include "base/synchronization/waitable_event.h"
-#include "blimp/client/public/compositor/compositor_dependencies.h"
-#include "blimp/client/support/compositor/blimp_context_provider.h"
-#include "cc/layers/layer.h"
-#include "cc/output/copy_output_request.h"
-#include "cc/output/copy_output_result.h"
-#include "gpu/ipc/common/surface_handle.h"
-#include "third_party/skia/include/core/SkBitmap.h"
-#include "ui/gfx/native_widget_types.h"
-
-namespace blimp {
-namespace client {
-
-TestBlimpEmbedderCompositor::TestBlimpEmbedderCompositor(
-    CompositorDependencies* compositor_dependencies)
-    : BlimpEmbedderCompositor(compositor_dependencies) {
-  SetContextProvider(BlimpContextProvider::Create(
-      gpu::kNullSurfaceHandle,
-      compositor_dependencies->GetGpuMemoryBufferManager()));
-}
-
-TestBlimpEmbedderCompositor::~TestBlimpEmbedderCompositor() = default;
-
-}  // namespace client
-}  // namespace blimp