Copy and paste sometimes removes spaces between words.

Source/core/editing/TextIterator.h

Index: Source/core/editing/TextIterator.h
diff --git a/Source/core/editing/TextIterator.h b/Source/core/editing/TextIterator.h
index 569df32a1a26b83c4809057151eeb0faa6c206bb..d50970e172528f66e4c253fbd69809e77ed5daac 100644
--- a/Source/core/editing/TextIterator.h
+++ b/Source/core/editing/TextIterator.h
@@ -47,7 +47,8 @@ enum TextIteratorBehavior {
     TextIteratorEmitsImageAltText = 1 << 5,
     TextIteratorEntersAuthorShadowRoots = 1 << 6,
     TextIteratorEmitsObjectReplacementCharacter = 1 << 7,
-    TextIteratorDoesNotBreakAtReplacedElement = 1 << 8
+    TextIteratorDoesNotBreakAtReplacedElement = 1 << 8,
+    TextIteratorBehavesAsIfNodesFollowing = 1 << 9,
 };
 typedef unsigned TextIteratorBehaviorFlags;
 
@@ -233,6 +234,8 @@ private:
     bool m_emitsObjectReplacementCharacter;
 
     bool m_breaksAtReplacedElement;
+
+    bool m_hasNodesFollowing;
 };
 
 // Iterates through the DOM range, returning all the text, and 0-length boundaries