WIP - compositor worker mega patch.

cc/blink/mutation_conversions.cc

+// 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.
+
+#include "cc/blink/mutation_conversions.h"
+
+namespace cc_blink {
+
+void convertToBlinkMutations(const cc::LayerTreeMutationMap& source,
+                             blink::WebMutationMap* destination) {
+  for (const auto& iter : source) {
+    const cc::LayerTreeMutation& src_mutation = iter.second;
+    blink::WebMutation& dest_mutation = (*destination)[iter.first];
+    if (src_mutation.is_opacity_mutated())
+      dest_mutation.setOpacity(src_mutation.opacity());
+    if (src_mutation.is_scroll_left_mutated())
+      dest_mutation.setScrollLeft(src_mutation.scroll_left());
+    if (src_mutation.is_scroll_top_mutated())
+      dest_mutation.setScrollTop(src_mutation.scroll_top());
+    if (src_mutation.is_transform_mutated())
+      dest_mutation.setTransform(src_mutation.transform());
+  }
+}
+
+void convertFromBlinkMutations(const blink::WebMutationMap& source,
+                               cc::LayerTreeMutationMap* destination) {
+  for (const auto& iter : source) {
+    const blink::WebMutation& src_mutation = iter.second;
+    cc::LayerTreeMutation& dest_mutation = (*destination)[iter.first];
+    if (src_mutation.isOpacityMutated())
+      dest_mutation.SetOpacity(src_mutation.opacity());
+    if (src_mutation.isScrollLeftMutated())
+      dest_mutation.SetScrollLeft(src_mutation.scrollLeft());
+    if (src_mutation.isScrollTopMutated())
+      dest_mutation.SetScrollTop(src_mutation.scrollTop());
+    if (src_mutation.isTransformMutated())
+      dest_mutation.SetTransform(src_mutation.transform());
+  }
+}
+
+}  // namespace cc_blink