ResizeObserver pt6: integration

third_party/WebKit/Source/core/layout/LayoutBox.cpp

Index: third_party/WebKit/Source/core/layout/LayoutBox.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutBox.cpp b/third_party/WebKit/Source/core/layout/LayoutBox.cpp
index 89b23b078658cced2b4731d5f485539a9a6f9bb3..42b7af7bf6add36aea59881e9f0178dfd099f56d 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBox.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutBox.cpp
@@ -1545,6 +1545,18 @@ bool LayoutBox::invalidatePaintOfLayerRectsForImage(WrappedImagePtr image, const
     return false;
 }
 
+void LayoutBox::frameRectChanged()
+{
+    if (node() && node()->isElementNode()) {
+        Element& element = toElement(*node());
+        element.sizeMayHaveChanged();
+    }
+    // The frame rect may change because of layout of other objects.
+    // Should check this object for paint invalidation.
+    if (!needsLayout())
+        setMayNeedPaintInvalidation();
+}
+
 bool LayoutBox::intersectsVisibleViewport()
 {
     LayoutRect rect = visualOverflowRect();