Remove unused processedBlocks variable.

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

Index: third_party/WebKit/Source/core/layout/LayoutView.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutView.cpp b/third_party/WebKit/Source/core/layout/LayoutView.cpp
index cfaadacd7e9b7416b1e296619e9b3d9fc646b260..e45c1c65a613489d9d6068031845070f0e913c60 100644
--- a/third_party/WebKit/Source/core/layout/LayoutView.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutView.cpp
@@ -606,8 +606,6 @@ IntRect LayoutView::selectionBounds() {
 }
 
 void LayoutView::invalidatePaintForSelection() {
-  HashSet<LayoutBlock*> processedBlocks;
-
   LayoutObject* end =
       layoutObjectAfterPosition(m_selectionEnd, m_selectionEndPos);
   for (LayoutObject* o = m_selectionStart; o && o != end;