Merge 63773 - 2010-07-20 Abhishek Arya <inferno@chromium.org>...

WebCore/editing/InsertParagraphSeparatorCommand.cpp

Index: WebCore/editing/InsertParagraphSeparatorCommand.cpp
===================================================================
--- WebCore/editing/InsertParagraphSeparatorCommand.cpp	(revision 53679)
+++ WebCore/editing/InsertParagraphSeparatorCommand.cpp	(working copy)
@@ -312,7 +312,7 @@
     Position leadingWhitespace = insertionPosition.leadingWhitespacePosition(VP_DEFAULT_AFFINITY);
     // FIXME: leadingWhitespacePosition is returning the position before preserved newlines for positions
     // after the preserved newline, causing the newline to be turned into a nbsp.
-    if (leadingWhitespace.isNotNull()) {
+    if (leadingWhitespace.isNotNull() && leadingWhitespace.node()->isTextNode()) {
         Text* textNode = static_cast<Text*>(leadingWhitespace.node());
         ASSERT(!textNode->renderer() || textNode->renderer()->style()->collapseWhiteSpace());
         replaceTextInNode(textNode, leadingWhitespace.deprecatedEditingOffset(), 1, nonBreakingSpaceString());
@@ -385,10 +385,10 @@
         insertionPosition = Position(insertionPosition.node(), 0);
         if (!insertionPosition.isRenderedCharacter()) {
             // Clear out all whitespace and insert one non-breaking space
-            ASSERT(insertionPosition.node()->isTextNode());
             ASSERT(!insertionPosition.node()->renderer() || insertionPosition.node()->renderer()->style()->collapseWhiteSpace());
             deleteInsignificantTextDownstream(insertionPosition);
-            insertTextIntoNode(static_cast<Text*>(insertionPosition.node()), 0, nonBreakingSpaceString());
+            if (insertionPosition.node()->isTextNode())
+                insertTextIntoNode(static_cast<Text*>(insertionPosition.node()), 0, nonBreakingSpaceString());
         }
     }