Fix up that no render SVG shape when change clip-path to visible after hidden.

third_party/WebKit/Source/core/layout/svg/LayoutSVGResourceContainer.cpp

Index: third_party/WebKit/Source/core/layout/svg/LayoutSVGResourceContainer.cpp
diff --git a/third_party/WebKit/Source/core/layout/svg/LayoutSVGResourceContainer.cpp b/third_party/WebKit/Source/core/layout/svg/LayoutSVGResourceContainer.cpp
index 6bfb64b4d40e99dad8fb6f6fbf6be7633253c801..efb188698aff89de5663f265f56f1dc02e7430a7 100644
--- a/third_party/WebKit/Source/core/layout/svg/LayoutSVGResourceContainer.cpp
+++ b/third_party/WebKit/Source/core/layout/svg/LayoutSVGResourceContainer.cpp
@@ -316,4 +316,43 @@ void LayoutSVGResourceContainer::markForLayoutAndParentResourceInvalidation(
   }
 }
 
+void LayoutSVGResourceContainer::markForLayoutAndParentResourceInvalidation(

[fs, 2017/02/06 10:17:35]

The way this is written it doesn't need to duplicate the other
markForLayoutAndParentResourceInvalidation, but can be written as a separate
method. I.e something like:

bool needsLayout = diff.needsPaintInvalidation() &&
isChildOfResourceContainer(object);

which then feeds into the other ("old") function.

+    LayoutObject* object,
+    StyleDifference diff) {
+  DCHECK(object);
+  DCHECK(object->node());
+
+  bool needsLayout = false;
+
+  LayoutObject* current = object;
+  while (current) {
+    if (current->isSVGResourceContainer()) {
+      needsLayout = diff.needsPaintInvalidation();
+      break;
+    }
+    current = current->parent();
+  }
+
+  if (needsLayout && !object->documentBeingDestroyed()) {
+    object->setNeedsLayoutAndFullPaintInvalidation(
+        LayoutInvalidationReason::SvgResourceInvalidated);
+  }
+
+  removeFromCacheAndInvalidateDependencies(object, needsLayout);
+
+  // Invalidate resources in ancestor chain, if needed.
+  current = object->parent();
+  while (current) {
+    removeFromCacheAndInvalidateDependencies(current, needsLayout);
+
+    if (current->isSVGResourceContainer()) {
+      // This will process the rest of the ancestors.
+      toLayoutSVGResourceContainer(current)->removeAllClientsFromCache();
+      break;
+    }
+
+    current = current->parent();
+  }
+}
+
 }  // namespace blink