compositor-worker: cc->blink mutation plumbing

third_party/WebKit/Source/web/WebViewImpl.cpp

Index: third_party/WebKit/Source/web/WebViewImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebViewImpl.cpp b/third_party/WebKit/Source/web/WebViewImpl.cpp
index 704d4cdeb4fc8b6cad73bced9cc75043da3d9c8a..da4caabeb4b0a833556469660b39b12b62671e5b 100644
--- a/third_party/WebKit/Source/web/WebViewImpl.cpp
+++ b/third_party/WebKit/Source/web/WebViewImpl.cpp
@@ -34,6 +34,7 @@
 #include "core/HTMLNames.h"
 #include "core/InputTypeNames.h"
 #include "core/clipboard/DataObject.h"
+#include "core/dom/DOMNodeIds.h"
 #include "core/dom/Document.h"
 #include "core/dom/Fullscreen.h"
 #include "core/dom/LayoutTreeBuilderTraversal.h"
@@ -111,6 +112,7 @@
 #include "platform/exported/WebActiveGestureAnimation.h"
 #include "platform/fonts/FontCache.h"
 #include "platform/graphics/Color.h"
+#include "platform/graphics/CompositorMutation.h"
 #include "platform/graphics/FirstPaintInvalidationTracking.h"
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/Image.h"
@@ -4438,6 +4440,19 @@ void WebViewImpl::recordFrameTimingEvent(FrameTimingEventType eventType, int64_t
     }
 }
 
+void WebViewImpl::applyMutations(const WebCompositorMutations& mutations)
+{
+    TRACE_EVENT0("compositor-worker", "WebViewImpl::applyMutations");
+    for (const auto& entry : static_cast<const CompositorMutations&>(mutations).map) {
+        int elementId = entry.key;
+        const CompositorMutation& mutation = *entry.value;
+        Node* node = DOMNodeIds::nodeForId(elementId);
+        if (!node || !toElement(node))
+            continue;
+        toElement(node)->updateFromMutation(mutation);
+    }
+}
+
 void WebViewImpl::updateLayerTreeViewport()
 {
     if (!page() || !m_layerTreeView)