Remove mail blockquote special case handling.

LayoutTests/platform/chromium/editing/inserting/insert-br-quoted-002-expected.txt

Index: LayoutTests/platform/chromium/editing/inserting/insert-br-quoted-002-expected.txt
diff --git a/LayoutTests/platform/chromium/editing/inserting/insert-br-quoted-002-expected.txt b/LayoutTests/platform/chromium/editing/inserting/insert-br-quoted-002-expected.txt
deleted file mode 100644
index 7dd7c1e40bd975d2bc04bfe7fd3e19ea7d63bed5..0000000000000000000000000000000000000000
--- a/LayoutTests/platform/chromium/editing/inserting/insert-br-quoted-002-expected.txt
+++ /dev/null
@@ -1,51 +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 784x110
-        RenderBlock {DIV} at (0,0) size 784x28
-          RenderText {#text} at (0,0) size 277x28
-            text run at (0,0) width 277: "Splitting Mail blockquotes."
-        RenderBlock {DIV} at (0,28) size 784x82
-          RenderText {#text} at (0,0) size 189x28
-            text run at (0,0) width 189: "Expected Results: "
-          RenderBR {BR} at (189,22) size 0x0
-          RenderText {#text} at (0,28) size 371x18
-            text run at (0,28) width 371: "Two blockquotes, with an unquoted blank line in between."
-          RenderBR {BR} at (371,42) size 0x0
-          RenderText {#text} at (0,46) size 403x18
-            text run at (0,46) width 403: "The first blockquote contains two lines, the second one is blank."
-          RenderBR {BR} at (403,60) size 0x0
-          RenderText {#text} at (0,64) size 312x18
-            text run at (0,64) width 312: "The second blockquote is a single non-blank line."
-      RenderBlock {DIV} at (0,110) size 784x224 [border: (2px solid #FF0000)]
-        RenderBlock (anonymous) at (14,14) size 756x28
-          RenderText {#text} at (0,0) size 120x28
-            text run at (0,0) width 120: "My citation:"
-        RenderBlock {DIV} at (14,66) size 756x144
-          RenderBlock {BLOCKQUOTE} at (40,0) size 676x60 [border: (2px solid #0000FF)]
-            RenderBlock {DIV} at (2,2) size 672x28
-              RenderText {#text} at (0,0) size 35x28
-                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 0x28
-          RenderBlock (anonymous) at (0,60) size 756x28
-            RenderBR {BR} at (0,0) size 0x28
-          RenderBlock {BLOCKQUOTE} at (40,112) size 676x32 [border: (2px solid #0000FF)]
-            RenderBlock {DIV} at (2,2) size 672x28
-              RenderText {#text} at (0,0) size 36x28
-                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