ASSERT -> DCHECK in core/editing.

third_party/WebKit/Source/core/editing/Position.h

Index: third_party/WebKit/Source/core/editing/Position.h
diff --git a/third_party/WebKit/Source/core/editing/Position.h b/third_party/WebKit/Source/core/editing/Position.h
index fb9843e8b455999074e5883a99cd5eed364f91d7..a29b93cd9c1a8e778ae7ea080bb71135c45122c7 100644
--- a/third_party/WebKit/Source/core/editing/Position.h
+++ b/third_party/WebKit/Source/core/editing/Position.h
@@ -100,7 +100,7 @@ public:
     // Inline O(1) access for Positions which callers know to be parent-anchored
     int offsetInContainerNode() const
     {
-        ASSERT(isOffsetInAnchor());
+        DCHECK(isOffsetInAnchor());
         return m_offset;
     }
 
@@ -232,10 +232,10 @@ bool operator!=(const PositionTemplate<Strategy>& a, const PositionTemplate<Stra
 template <typename Strategy>
 PositionTemplate<Strategy> PositionTemplate<Strategy>::inParentBeforeNode(const Node& node)
 {
-    // FIXME: This should ASSERT(node.parentNode())
+    // FIXME: This should DCHECK(node.parentNode())
     // At least one caller currently hits this ASSERT though, which indicates
     // that the caller is trying to make a position relative to a disconnected node (which is likely an error)
-    // Specifically, editing/deleting/delete-ligature-001.html crashes with ASSERT(node->parentNode())
+    // Specifically, editing/deleting/delete-ligature-001.html crashes with DCHECK(node->parentNode())
     return PositionTemplate<Strategy>(Strategy::parent(node), Strategy::index(node));
 }
 
@@ -247,7 +247,7 @@ inline Position positionInParentBeforeNode(const Node& node)
 template <typename Strategy>
 PositionTemplate<Strategy> PositionTemplate<Strategy>::inParentAfterNode(const Node& node)
 {
-    ASSERT(node.parentNode());
+    DCHECK(node.parentNode());

[yosin_UTC9, 2016/04/14 04:35:00]

How about adding |<< node|?

     return PositionTemplate<Strategy>(Strategy::parent(node), Strategy::index(node) + 1);
 }
 
@@ -260,7 +260,7 @@ inline Position positionInParentAfterNode(const Node& node)
 template <typename Strategy>
 PositionTemplate<Strategy> PositionTemplate<Strategy>::beforeNode(Node* anchorNode)
 {
-    ASSERT(anchorNode);
+    DCHECK(anchorNode);
     return PositionTemplate<Strategy>(anchorNode, PositionAnchorType::BeforeAnchor);
 }
 
@@ -272,7 +272,7 @@ inline Position positionBeforeNode(Node* anchorNode)
 template <typename Strategy>
 PositionTemplate<Strategy> PositionTemplate<Strategy>::afterNode(Node* anchorNode)
 {
-    ASSERT(anchorNode);
+    DCHECK(anchorNode);
     return PositionTemplate<Strategy>(anchorNode, PositionAnchorType::AfterAnchor);
 }