Ensure we never remove the style attribute when syncing it from CSSOM.

third_party/WebKit/LayoutTests/editing/style/push-down-implicit-styles-around-list-win-expected.txt

Index: third_party/WebKit/LayoutTests/editing/style/push-down-implicit-styles-around-list-win-expected.txt
diff --git a/third_party/WebKit/LayoutTests/editing/style/push-down-implicit-styles-around-list-win-expected.txt b/third_party/WebKit/LayoutTests/editing/style/push-down-implicit-styles-around-list-win-expected.txt
index 17364acde0409f9e25eda0a29f6a6e35da8d9f69..984c09abf6e480415ad9ef9053d29886c4bb076c 100644
--- a/third_party/WebKit/LayoutTests/editing/style/push-down-implicit-styles-around-list-win-expected.txt
+++ b/third_party/WebKit/LayoutTests/editing/style/push-down-implicit-styles-around-list-win-expected.txt
@@ -3,22 +3,22 @@ Test to make sure we push down inline styles properly.
 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
 
 
-PASS bold on first word of <b><ul><li><b>a</b></li></ul></b> yields <ul><li>a</li></ul>
-PASS bold on first word of <b><ul><li>hello</li><li>world</li></ul></b> yields <ul><li>hello</li><li style="font-weight: bold;">world</li></ul>
-PASS bold on last word of <ul><li>hello</li><li style="font-weight: bold;">world</li></ul> yields <ul><li>hello</li><li>world</li></ul>
-PASS bold on first word of <b><ul><li>hello world</li><li>webkit</li></ul></b> yields <ul><li>hello <b>world</b></li><li style="font-weight: bold;">webkit</li></ul>
-PASS italic on first word of <i><ul><li><i>a</i></li></ul></i> yields <ul><li>a</li></ul>
-PASS italic on first word of <i><ul><li>hello</li><li>world</li></ul></i> yields <ul><li>hello</li><li style="font-style: italic;">world</li></ul>
-PASS italic on last word of <ul><li>hello</li><li style="font-style: italic;">world</li></ul> yields <ul><li>hello</li><li>world</li></ul>
-PASS italic on first word of <i><ul><li>hello world</li><li>webkit</li></ul></i> yields <ul><li>hello <i>world</i></li><li style="font-style: italic;">webkit</li></ul>
-PASS underline on first word of <u><ul><li><u>a</u></li></ul></u> yields <ul><li>a</li></ul>
-PASS underline on first word of <u><ul><li>hello</li><li>world</li></ul></u> yields <ul><li>hello</li><li style="text-decoration-line: underline;">world</li></ul>
-PASS underline on last word of <ul><li>hello</li><li style="text-decoration: underline;">world</li></ul> yields <ul><li>hello</li><li>world</li></ul>
-PASS underline on first word of <u><ul><li>hello world</li><li>webkit</li></ul></u> yields <ul><li>hello <u>world</u></li><li style="text-decoration-line: underline;">webkit</li></ul>
-PASS strikethrough on first word of <strike><ul><li><strike>a</strike></li></ul></strike> yields <ul><li>a</li></ul>
-PASS strikethrough on first word of <strike><ul><li>hello</li><li>world</li></ul></strike> yields <ul><li>hello</li><li style="text-decoration-line: line-through;">world</li></ul>
-PASS strikethrough on last word of <ul><li>hello</li><li style="text-decoration: line-through;">world</li></ul> yields <ul><li>hello</li><li>world</li></ul>
-PASS strikethrough on first word of <strike><ul><li>hello world</li><li>webkit</li></ul></strike> yields <ul><li>hello <strike>world</strike></li><li style="text-decoration-line: line-through;">webkit</li></ul>
+PASS bold on first word of <b><ul><li><b>a</b></li></ul></b> yields <ul style=""><li style="">a</li></ul>
+PASS bold on first word of <b><ul><li>hello</li><li>world</li></ul></b> yields <ul style=""><li style="">hello</li><li style="font-weight: bold;">world</li></ul>
+PASS bold on last word of <ul><li>hello</li><li style="font-weight: bold;">world</li></ul> yields <ul><li>hello</li><li style="">world</li></ul>
+PASS bold on first word of <b><ul><li>hello world</li><li>webkit</li></ul></b> yields <ul style=""><li style="">hello <b>world</b></li><li style="font-weight: bold;">webkit</li></ul>
+PASS italic on first word of <i><ul><li><i>a</i></li></ul></i> yields <ul style=""><li style="">a</li></ul>
+PASS italic on first word of <i><ul><li>hello</li><li>world</li></ul></i> yields <ul style=""><li style="">hello</li><li style="font-style: italic;">world</li></ul>
+PASS italic on last word of <ul><li>hello</li><li style="font-style: italic;">world</li></ul> yields <ul><li>hello</li><li style="">world</li></ul>
+PASS italic on first word of <i><ul><li>hello world</li><li>webkit</li></ul></i> yields <ul style=""><li style="">hello <i>world</i></li><li style="font-style: italic;">webkit</li></ul>
+PASS underline on first word of <u><ul><li><u>a</u></li></ul></u> yields <ul style=""><li style="">a</li></ul>
+PASS underline on first word of <u><ul><li>hello</li><li>world</li></ul></u> yields <ul style=""><li style="">hello</li><li style="text-decoration-line: underline;">world</li></ul>
+PASS underline on last word of <ul><li>hello</li><li style="text-decoration: underline;">world</li></ul> yields <ul><li>hello</li><li style="">world</li></ul>
+PASS underline on first word of <u><ul><li>hello world</li><li>webkit</li></ul></u> yields <ul style=""><li style="">hello <u>world</u></li><li style="text-decoration-line: underline;">webkit</li></ul>
+PASS strikethrough on first word of <strike><ul><li><strike>a</strike></li></ul></strike> yields <ul style=""><li style="">a</li></ul>
+PASS strikethrough on first word of <strike><ul><li>hello</li><li>world</li></ul></strike> yields <ul style=""><li style="">hello</li><li style="text-decoration-line: line-through;">world</li></ul>
+PASS strikethrough on last word of <ul><li>hello</li><li style="text-decoration: line-through;">world</li></ul> yields <ul><li>hello</li><li style="">world</li></ul>
+PASS strikethrough on first word of <strike><ul><li>hello world</li><li>webkit</li></ul></strike> yields <ul style=""><li style="">hello <strike>world</strike></li><li style="text-decoration-line: line-through;">webkit</li></ul>
 PASS successfullyParsed is true
 
 TEST COMPLETE