Add initial CC support for scroll-blocks-on

cc/blink/web_layer_impl.cc

 // Copyright 2014 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/web_layer_impl.h"
 
 #include "base/bind.h"
 #include "base/lazy_instance.h"
 #include "base/strings/string_util.h"
 #include "base/threading/thread_checker.h"
@@ skipping 365 matching lines @@
   size_t i = 0;
   for (cc::Region::Iterator region_rects(layer_->touch_event_handler_region());
        region_rects.has_rect();
        region_rects.next()) {
     result[i] = region_rects.rect();
     ++i;
   }
   return result;
 }
 
+static_assert(static_cast<ScrollBlocksOn>(blink::WebScrollBlocksOnNone) ==
+                  ScrollBlocksOnNone,
+              "ScrollBlocksOn and WebScrollBlocksOn enums must match");
+static_assert(static_cast<ScrollBlocksOn>(blink::WebScrollBlocksOnStartTouch) ==
+                  ScrollBlocksOnStartTouch,
+              "ScrollBlocksOn and WebScrollBlocksOn enums must match");
+static_assert(static_cast<ScrollBlocksOn>(blink::WebScrollBlocksOnWheelEvent) ==
+                  ScrollBlocksOnWheelEvent,
+              "ScrollBlocksOn and WebScrollBlocksOn enums must match");
+static_assert(
+    static_cast<ScrollBlocksOn>(blink::WebScrollBlocksOnScrollEvent) ==
+        ScrollBlocksOnScrollEvent,
+    "ScrollBlocksOn and WebScrollBlocksOn enums must match");
+
+void WebLayerImpl::setScrollBlocksOn(blink::WebScrollBlocksOn blocks) {
+  layer_->SetScrollBlocksOn(static_cast<ScrollBlocksOn>(blocks));
+}
+
+blink::WebScrollBlocksOn WebLayerImpl::scrollBlocksOn() const {
+  return static_cast<blink::WebScrollBlocksOn>(layer_->scroll_blocks_on());
+}
+
 void WebLayerImpl::setIsContainerForFixedPositionLayers(bool enable) {
   layer_->SetIsContainerForFixedPositionLayers(enable);
 }
 
 bool WebLayerImpl::isContainerForFixedPositionLayers() const {
   return layer_->IsContainerForFixedPositionLayers();
 }
 
 static blink::WebLayerPositionConstraint ToWebLayerPositionConstraint(
     const cc::LayerPositionConstraint& constraint) {
@@ skipping 83 matching lines @@
   if (parent)
     clip_parent = static_cast<WebLayerImpl*>(parent)->layer();
   layer_->SetClipParent(clip_parent);
 }
 
 Layer* WebLayerImpl::layer() const {
   return layer_.get();
 }
 
 }  // namespace cc_blink