Invalidate paint of tickmarks on document change

Source/core/dom/Document.cpp

Index: Source/core/dom/Document.cpp
diff --git a/Source/core/dom/Document.cpp b/Source/core/dom/Document.cpp
index f947b0eb159cb8b89159567ec7bfbf5a5b188cf0..c91aa9ea899fb3d3789d40a2446ae4ed90511b7e 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -3677,7 +3677,6 @@ void Document::didInsertText(Node* text, unsigned offset, unsigned length)
     for (Range* range : m_ranges)
         range->didInsertText(text, offset, length);
 
-    // Update the markers for spelling and grammar checking.

[Xianzhu, 2015/04/17 18:25:03]

This is removed because it's incorrect and not meaningful.

     m_markers->shiftMarkers(text, offset, length);
 }
 
@@ -3686,7 +3685,6 @@ void Document::didRemoveText(Node* text, unsigned offset, unsigned length)
     for (Range* range : m_ranges)
         range->didRemoveText(text, offset, length);
 
-    // Update the markers for spelling and grammar checking.
     m_markers->removeMarkers(text, offset, length);
     m_markers->shiftMarkers(text, offset + length, 0 - length);
 }