Dark theme: style new status chips in threads

A redesign is moving the pinned and locked icons inside the thread view
from the title to the bottom of the question, in the form of chips. This
change adds styles for these chips.

Change-Id: Iaeaef4237af2bf38335008df27e9a6b1d6a7b8a5
diff --git a/src/injections/ccdarktheme.css b/src/injections/ccdarktheme.css
index c87f968..f17b2ca 100644
--- a/src/injections/ccdarktheme.css
+++ b/src/injections/ccdarktheme.css
@@ -353,6 +353,17 @@
   color: var(--TWPT-primary-text-alt) !important;
 }
 
+ec-question .state-chips material-chip {
+  background-color: var(--TWPT-button-background)!important;
+  box-shadow: 0 2px 1px -1px rgba(0, 0, 0, 0.2),
+      0 1px 1px 0 rgba(0, 0, 0, 0.14),
+      0 1px 3px 0 rgba(0, 0, 0, 0.12);
+}
+
+ec-question .state-chips material-chip .content {
+  color: var(--TWPT-primary-text)!important;
+}
+
 ec-question .footer,
     ec-ask-flow .content-disclaimer {
   color: var(--TWPT-primary-text)!important;