compositor-worker: Remove code from cc_blink

cc/blink/web_compositor_mutable_state_provider_impl.h

Index: cc/blink/web_compositor_mutable_state_provider_impl.h
diff --git a/cc/blink/web_compositor_mutable_state_provider_impl.h b/cc/blink/web_compositor_mutable_state_provider_impl.h
deleted file mode 100644
index 138103d6df61e8f05863b2bc9d051a4257d9510a..0000000000000000000000000000000000000000
--- a/cc/blink/web_compositor_mutable_state_provider_impl.h
+++ /dev/null
@@ -1,44 +0,0 @@
-// Copyright 2015 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.
-
-#ifndef CC_BLINK_WEB_COMPOSITOR_MUTABLE_STATE_PROVIDER_IMPL_H_
-#define CC_BLINK_WEB_COMPOSITOR_MUTABLE_STATE_PROVIDER_IMPL_H_
-
-#include "base/compiler_specific.h"
-#include "base/containers/hash_tables.h"
-#include "cc/animation/layer_tree_mutation.h"
-#include "cc/blink/cc_blink_export.h"
-
-#include "third_party/WebKit/public/platform/WebCompositorMutableStateProvider.h"
-
-namespace cc {
-class LayerTreeImpl;
-}  // namespace cc
-
-namespace cc_blink {
-
-class WebCompositorMutableStateProviderImpl
-    : public blink::WebCompositorMutableStateProvider {
- public:
-  // TODO(vollick): after slimming paint v2, this will need to operate on
-  // property trees, not the layer tree impl.
-  //
-  // The LayerTreeImpl and the LayerTreeMutationMap are both owned by caller.
-  CC_BLINK_EXPORT WebCompositorMutableStateProviderImpl(
-      cc::LayerTreeImpl* state,
-      cc::LayerTreeMutationMap* mutations);
-
-  CC_BLINK_EXPORT ~WebCompositorMutableStateProviderImpl() override;
-
-  CC_BLINK_EXPORT blink::WebPassOwnPtr<blink::WebCompositorMutableState>
-  getMutableStateFor(uint64_t element_id) override WARN_UNUSED_RESULT;
-
- private:
-  cc::LayerTreeImpl* state_;
-  cc::LayerTreeMutationMap* mutations_;
-};
-
-}  // namespace cc_blink
-
-#endif  // CC_BLINK_WEB_COMPOSITOR_MUTABLE_STATE_PROVIDER_IMPL_H_