Bug 1664242 - Use -moz-gtk-info-bar for RSS feed CSS on Linux. r=frg

Port the RSS feed part of bug 1187203.

As this is GTK-specific, changes are done in a separate
feed-subscribe.css for GTK builds.

--HG--
rename : suite/themes/classic/communicator/feed-subscribe.css => suite/themes/classic/linux/communicator/feed-subscribe.css

suite/themes/classic/jar.mn

@@ -143,7 +143,11 @@ classic.jar:
   skin/classic/communicator/brand/throbber16-single.png                 (communicator/brand/throbber16-single.png)
   skin/classic/communicator/dataman/dataman.css                         (communicator/dataman/dataman.css)
   skin/classic/communicator/dataman/datamanIcon-16.png                  (communicator/dataman/datamanIcon-16.png)
+#ifdef MOZ_WIDGET_GTK
+  skin/classic/communicator/feed-subscribe.css                          (linux/communicator/feed-subscribe.css)
+#else
   skin/classic/communicator/feed-subscribe.css                          (communicator/feed-subscribe.css)
+#endif
   skin/classic/communicator/feed-subscribe-ui.css                       (communicator/feed-subscribe-ui.css)
   skin/classic/communicator/fullscreen-video.css                        (communicator/fullscreen-video.css)
   skin/classic/communicator/downloads/dl-remove.png                     (communicator/downloads/dl-remove.png)

suite/themes/classic/linux/communicator/feed-subscribe.css

@@ -0,0 +1,149 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+html {
+  background: -moz-Dialog;
+  font: message-box;
+}
+
+#feedBody {
+  border: 1px solid ThreeDShadow;
+  padding: 3em;
+  padding-inline-start: 30px;
+  margin: 2em auto;
+  background: -moz-Field;
+}
+
+#feedHeaderContainer {
+  border: 1px solid ThreeDShadow;
+  border-radius: 10px;
+  margin: -4em auto 0 auto;
+  background-color: InfoBackground;
+  -moz-appearance: -moz-gtk-info-bar;
+}
+
+#feedHeader {
+  margin-top: 4.9em;
+  margin-bottom: 1em;
+  margin-inline-start: 1.4em;
+  margin-inline-end: 1em;
+  padding-inline-start: 2.9em;
+  font-size: 110%;
+  color: -moz-gtk-info-bar-text;
+}
+
+.feedBackground {
+  background: url("chrome://communicator/skin/icons/feedIcon.png") 0% 10% no-repeat;
+}
+
+.videoPodcastBackground {
+  background: url("chrome://communicator/skin/icons/videoFeedIcon.png") 0% 10% no-repeat;
+}
+
+.audioPodcastBackground {
+  background: url("chrome://communicator/skin/icons/audioFeedIcon.png") 0% 10% no-repeat;
+}
+
+#feedHeader[dir="rtl"] {
+  background-position: 100% 10%;
+}
+
+#feedIntroText {
+  display: none;
+}
+
+#feedHeader[firstrun="true"] #feedIntroText {
+  padding-top: 0.1em;
+  padding-inline-start: 0.6em;
+  display: block;
+}
+
+#feedHeader[firstrun="true"] > #feedSubscribeLine {
+  padding-inline-start: 1.8em;
+}
+
+#feedSubscribeLine {
+  padding-top: 0.2em;
+}
+
+/* Don't print subscription UI */
+@media print {
+  #feedHeaderContainer {
+    display: none;
+  }
+}
+
+body {
+  margin: 0;
+  padding: 0 3em;
+  color: -moz-fieldText;
+  font: message-box;
+}
+
+h1 {
+  font-size: 160%;
+  border-bottom: 2px solid ThreeDLightShadow;
+  margin: 0 0 .2em 0;
+}
+
+h2 {
+  font-size: 110%;
+  font-weight: normal;
+  margin: 0 0 .6em 0;
+}
+
+#feedTitleLink {
+  float: right;
+  margin-inline-start: .6em;
+  margin-inline-end: 0;
+  margin-top: 0;
+  margin-bottom: 0;
+}
+
+a[href] img {
+  border: none;
+}
+
+#feedTitleContainer {
+  margin-inline-start: 0;
+  margin-inline-end: .6em;
+  margin-top: 0;
+  margin-bottom: 0;
+}
+
+#feedTitleImage {
+  margin-inline-start: .6em;
+  margin-inline-end: 0;
+  margin-top: 0;
+  margin-bottom: 0;
+  max-width: 300px;
+  max-height: 150px;
+}
+
+.feedEntryContent {
+  font-size: 110%;
+}
+
+.lastUpdated {
+  font-size: 85%;
+  font-weight: normal;
+}
+
+.type-icon {
+  vertical-align: bottom;
+  height: 16px;
+  width: 16px;
+}
+
+.enclosures {
+  border: 1px solid ThreeDShadow;
+  padding: 1em;
+  margin: 1em auto;
+  background: -moz-Dialog;
+}
+
+.enclosure {
+  vertical-align: middle;
+  margin-left: 2px;
+}