Remove mail blockquote special case handling.

LayoutTests/platform/chromium-win/editing/inserting/insert-br-quoted-006-expected.txt

Index: LayoutTests/platform/chromium-win/editing/inserting/insert-br-quoted-006-expected.txt
diff --git a/LayoutTests/platform/chromium-win/editing/inserting/insert-br-quoted-006-expected.txt b/LayoutTests/platform/chromium-win/editing/inserting/insert-br-quoted-006-expected.txt
deleted file mode 100644
index 163bf4686d16c10521b637924d93f1d54520e699..0000000000000000000000000000000000000000
--- a/LayoutTests/platform/chromium-win/editing/inserting/insert-br-quoted-006-expected.txt
+++ /dev/null
@@ -1,55 +0,0 @@
-EDITING DELEGATE: shouldBeginEditingInDOMRange:range from 0 of DIV > BODY > HTML > #document to 3 of DIV > BODY > HTML > #document
-EDITING DELEGATE: webViewDidBeginEditing:WebViewDidBeginEditingNotification
-EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: shouldChangeSelectedDOMRange:range from 0 of DIV > DIV > DIV > BLOCKQUOTE > DIV > DIV > BODY > HTML > #document to 0 of DIV > DIV > DIV > BLOCKQUOTE > DIV > DIV > BODY > HTML > #document toDOMRange:range from 2 of DIV > DIV > BODY > HTML > #document to 2 of DIV > DIV > BODY > HTML > #document affinity:NSSelectionAffinityDownstream stillSelecting:FALSE
-EDITING DELEGATE: webViewDidChangeSelection:WebViewDidChangeSelectionNotification
-EDITING DELEGATE: webViewDidChange:WebViewDidChangeNotification
-layer at (0,0) size 800x600
-  RenderView at (0,0) size 800x600
-layer at (0,0) size 800x600
-  RenderBlock {HTML} at (0,0) size 800x600
-    RenderBody {BODY} at (8,8) size 784x584
-      RenderBlock {DIV} at (0,0) size 784x114
-        RenderBlock {DIV} at (0,0) size 784x27
-          RenderText {#text} at (0,0) size 277x26
-            text run at (0,0) width 277: "Splitting Mail blockquotes."
-        RenderBlock {DIV} at (0,27) size 784x87
-          RenderText {#text} at (0,0) size 189x26
-            text run at (0,0) width 189: "Expected Results: "
-          RenderBR {BR} at (189,21) size 0x0
-          RenderText {#text} at (0,27) size 351x19
-            text run at (0,27) width 351: "Two blockquotes, with an unquoted blank line in between."
-          RenderBR {BR} at (351,42) size 0x0
-          RenderText {#text} at (0,47) size 384x19
-            text run at (0,47) width 384: "The first blockquote contains two lines, the second one is blank."
-          RenderBR {BR} at (384,62) size 0x0
-          RenderText {#text} at (0,67) size 384x19
-            text run at (0,67) width 384: "The second blockquote contains two lines, the first one is blank."
-          RenderBR {BR} at (384,82) size 0x0
-      RenderBlock {DIV} at (0,114) size 784x300 [border: (2px solid #FF0000)]
-        RenderBlock (anonymous) at (14,14) size 756x28
-          RenderText {#text} at (0,0) size 117x27
-            text run at (0,0) width 117: "My citation:"
-        RenderBlock {DIV} at (14,66) size 756x196
-          RenderBlock {BLOCKQUOTE} at (40,0) size 676x60 [border: (2px solid #0000FF)]
-            RenderBlock {DIV} at (2,2) size 672x28
-              RenderText {#text} at (0,0) size 35x27
-                text run at (0,0) width 35: "one"
-            RenderBlock {DIV} at (2,30) size 672x28
-              RenderBlock {DIV} at (0,0) size 672x28
-                RenderBlock {DIV} at (0,0) size 672x28
-                  RenderBR {BR} at (0,0) size 0x27
-            RenderBlock (anonymous) at (2,58) size 672x0
-          RenderBlock (anonymous) at (0,84) size 756x28
-            RenderBR {BR} at (0,0) size 0x27
-          RenderBlock {BLOCKQUOTE} at (40,136) size 676x60 [border: (2px solid #0000FF)]
-            RenderBlock (anonymous) at (2,2) size 672x28
-              RenderBR {BR} at (0,0) size 0x27
-            RenderBlock {DIV} at (2,30) size 672x28
-              RenderText {#text} at (0,0) size 36x27
-                text run at (0,0) width 36: "two"
-caret: position 0 of child 2 {BR} of child 1 {DIV} of child 3 {DIV} of body