Use content width to calculate percentage text-indent

The new line in TestExpectations is for an old WPT test that checks
for the old behavior.

BUG=884588
R=eae@chromium.org

Change-Id: I560e8d240d773536d084b598ac76261f9ecef81a
Reviewed-on: https://chromium-review.googlesource.com/c/1285109
Commit-Queue: Stefan Zager <szager@chromium.org>
Reviewed-by: Emil A Eklund <eae@chromium.org>
Cr-Commit-Position: refs/heads/master@{#600989}
diff --git a/css/css-text/text-indent/reference/text-indent-percentage-002-ref.html b/css/css-text/text-indent/reference/text-indent-percentage-002-ref.html
index 5b3bc91..eebe7da 100644
--- a/css/css-text/text-indent/reference/text-indent-percentage-002-ref.html
+++ b/css/css-text/text-indent/reference/text-indent-percentage-002-ref.html
@@ -4,7 +4,10 @@
 <title>CSS Text Test reference</title>
 <link rel="author" title="Florian Rivoal" href="http://florian.rivoal.net/">
 <style>
-div { padding-left: 50px; }
+div {
+  padding-left: 50px;
+  font-family: Ahem;
+}
 </style>
 
 <p>Test passes if there is a single black X below and no red.
diff --git a/css/css-text/text-indent/text-indent-percentage-002.html b/css/css-text/text-indent/text-indent-percentage-002.html
index 6596926..1c0a33b 100644
--- a/css/css-text/text-indent/text-indent-percentage-002.html
+++ b/css/css-text/text-indent/text-indent-percentage-002.html
@@ -13,6 +13,7 @@
   border-right: 10px solid white;
   margin-right: 10px;
   padding-right: 10px;
+  font-family: Ahem;
 }
 div {
   box-sizing: border-box;
diff --git a/css/css-text/text-indent/text-indent-percentage-003.html b/css/css-text/text-indent/text-indent-percentage-003.html
index f81390d..9f41e5b 100644
--- a/css/css-text/text-indent/text-indent-percentage-003.html
+++ b/css/css-text/text-indent/text-indent-percentage-003.html
@@ -13,6 +13,7 @@
   border-right: 10px solid white;
   margin-right: 10px;
   padding-right: 10px;
+  font-family: Ahem;
 }
 div {
   box-sizing: border-box;
diff --git a/css/css-text/text-indent/text-indent-percentage-004.html b/css/css-text/text-indent/text-indent-percentage-004.html
index 73f4c21..4d1dff1 100644
--- a/css/css-text/text-indent/text-indent-percentage-004.html
+++ b/css/css-text/text-indent/text-indent-percentage-004.html
@@ -13,6 +13,7 @@
   border-right: 10px solid white;
   margin-right: 10px;
   padding-right: 10px;
+  font-family: Ahem;
 }
 div {
   box-sizing: border-box;