Move InSameBlock() to InsertParagraphSeparatorCommand.cpp

third_party/WebKit/Source/core/editing/VisibleUnits.cpp

Index: third_party/WebKit/Source/core/editing/VisibleUnits.cpp
diff --git a/third_party/WebKit/Source/core/editing/VisibleUnits.cpp b/third_party/WebKit/Source/core/editing/VisibleUnits.cpp
index cd0758efdd148523400c75f7f8cc862df5b68544..9ce66f3b92a010c637e36c0b2eb2c3a4bcaab62b 100644
--- a/third_party/WebKit/Source/core/editing/VisibleUnits.cpp
+++ b/third_party/WebKit/Source/core/editing/VisibleUnits.cpp
@@ -690,14 +690,6 @@ VisiblePosition EndOfBlock(const VisiblePosition& visible_position,
                    : VisiblePosition();
 }
 
-bool InSameBlock(const VisiblePosition& a, const VisiblePosition& b) {
-  DCHECK(a.IsValid()) << a;
-  DCHECK(b.IsValid()) << b;
-  return !a.IsNull() &&
-         EnclosingBlock(a.DeepEquivalent().ComputeContainerNode()) ==
-             EnclosingBlock(b.DeepEquivalent().ComputeContainerNode());
-}
-
 bool IsStartOfBlock(const VisiblePosition& pos) {
   DCHECK(pos.IsValid()) << pos;
   return pos.IsNotNull() &&