Avoid removing destination during moving paragrahs

This patch changes CompositeEditCommand::cleanupAfterDeletion(), which is called when moving paragraphs after deletion, not to remove destination node.

BUG=121317
R=leviw@chromium.org

Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=153982

[yosin_UTC9, 2013-06-12 05:18:15]

Could you review this patch?
Thanks in advance.

[leviw_travelin_and_unemployed, 2013-07-11 04:18:07]

lgtm.

From description:
This patch changes CompositeEditCommand::cleanupAfterDeletion(), which called
during moving paragraph at deletion, not to remove destination node. 

nit: which is called when moving paragraphs after deletion

[commit-bot: I haz the power, 2013-07-11 04:52:35]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/yosin@chromium.org/16053005/6001

[commit-bot: I haz the power, 2013-07-11 04:52:37]

Failed to apply patch for
LayoutTests/editing/inserting/insert-html-crash-01-expected.txt:
While running svn copy
LayoutTests/fast/forms/interactive-validation-crash-by-style-override-expected.txt
LayoutTests/editing/inserting/insert-html-crash-01-expected.txt --config-dir
/b/commit-queue/subversion_config --non-interactive --username
commit-bot@chromium.org;
  svn: Path
'LayoutTests/fast/forms/interactive-validation-crash-by-style-override-expected.txt'
does not exist

Patch:   NR 
LayoutTests/fast/forms/interactive-validation-crash-by-style-override-expected.txt->LayoutTests/editing/inserting/insert-html-crash-01-expected.txt
Index: LayoutTests/editing/inserting/insert-html-crash-01-expected.txt
diff --git
a/LayoutTests/fast/forms/interactive-validation-crash-by-style-override-expected.txt
b/LayoutTests/editing/inserting/insert-html-crash-01-expected.txt
similarity index 95%
copy from
LayoutTests/fast/forms/interactive-validation-crash-by-style-override-expected.txt
copy to LayoutTests/editing/inserting/insert-html-crash-01-expected.txt
index
ae4beed003bda9099382d72c23033bad57aa4ab1..2be01c2df05fa42f52850c967ed7fa2262f95315
100644
---
a/LayoutTests/fast/forms/interactive-validation-crash-by-style-override-expected.txt
+++ b/LayoutTests/editing/inserting/insert-html-crash-01-expected.txt
@@ -1,4 +1,3 @@
-  
 PASS Not crashed
 PASS successfullyParsed is true

[yosin_UTC9, 2013-07-11 06:16:13]

Committed patchset #2 manually as r153982 (presubmit successful).