Clean up stale CSS properties.

Changes some -webkit prefixed properties to real CSS properties.

Disables tex-align:right warning for our RTL special casing of
direction for file names.

No functional change.

Bug: 1049413
Change-Id: I07828075820519630f3fd5d87e7855603ee8f46d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2040634
Auto-Submit: Alex Danilo <adanilo@chromium.org>
Reviewed-by: Luciano Pacheco <lucmult@chromium.org>
Commit-Queue: Luciano Pacheco <lucmult@chromium.org>
Commit-Queue: Alex Danilo <adanilo@chromium.org>
Cr-Commit-Position: refs/heads/master@{#738779}

ui/file_manager/file_manager/foreground/css/common.css

@@ -140,9 +140,9 @@ cr-menu.chrome-menu > [checked]::before {
 }
 
 .cr-dialog-buttons > button {
-  -webkit-margin-end: 0;
-  -webkit-margin-start: 5px;
   font-weight: 500;
+  margin-inline-end: 0;
+  margin-inline-start: 5px;
   min-height: 32px;
   min-width: 70px;
   padding: auto;
@@ -175,7 +175,7 @@ cr-menu.chrome-menu > [checked]::before {
 }
 
 .buttonbar button {
-  -webkit-margin-start: 12px;
+  margin-inline-start: 12px;
 }
 
 /* Gray progress bar. Background color google grey 700 with 30% opacity */
@@ -196,7 +196,7 @@ cr-menu.chrome-menu > [checked]::before {
 /* Their base bidi direction should be ltr even in RTL languages. */
 html[dir='rtl'] .entry-name {
   direction: ltr;
-  text-align: right;
+  text-align: right;  /* csschecker-disable-line left-right */
   unicode-bidi: embed;
 }
 
@@ -269,12 +269,12 @@ html[dir='rtl'] .entry-name {
 }
 
 .cr-dialog-title {
-  -webkit-margin-end: 20px;
-  -webkit-margin-start: 4px;
   display: block;
   font-size: 14px;
   font-weight: 500;
   margin-bottom: 10px;
+  margin-inline-end: 20px;
+  margin-inline-start: 4px;
   margin-top: 4px;
   white-space: nowrap;
   word-wrap: normal;