Bug 1617679: Reword the SSB menus and add a page action icon. r=Gijs

Differential Revision: https://phabricator.services.mozilla.com/D63920

--HG--
extra : moz-landing-system : lando

browser/components/customizableui/content/panelUI.inc.xhtml

@@ -340,7 +340,7 @@
                        />
         <toolbarbutton id="appMenu-ssb-button"
                        class="subviewbutton subviewbutton-iconic subviewbutton-nav"
-                       label="Site Browsers"
+                       label="Installed Websites"
                        closemenu="none"
                        oncommand="PanelUI.showSubView('appMenu-SSBView', this)"
                        hidden="true" persist="hidden"/>

browser/modules/PageActions.jsm

@@ -1269,7 +1269,7 @@ if (SiteSpecificBrowserService.isEnabled) {
   gBuiltInActions.push({
     id: "launchSSB",
     // Hardcoded for now. Localization tracked in bug 1602528.
-    title: "Launch Site Specific Browser",
+    title: "Install Website as App",
     onLocationChange(browserWindow) {
       browserPageActions(browserWindow).launchSSB.updateState();
     },

browser/themes/shared/install-ssb.svg

@@ -0,0 +1,7 @@
+<!-- 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/. -->
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 16 16">
+  <path fill="context-fill" fill-opacity="context-fill-opacity" d="M15 2h-1V1a1 1 0 0 0-2 0v1h-1a1 1 0 0 0 0 2h1v1a1 1 0 0 0 2 0V4h1a1 1 0 0 0 0-2z"/>
+  <path fill="context-fill" fill-opacity="context-fill-opacity" d="M13 7a1 1 0 0 0-1 1v5H3V4h5a1 1 0 0 0 0-2H2a1 1 0 0 0-1 1v11a1 1 0 0 0 1 1h11a1 1 0 0 0 1-1V8a1 1 0 0 0-1-1z"/>
+</svg>

browser/themes/shared/jar.inc.mn

@@ -291,3 +291,4 @@
   skin/classic/browser/privatebrowsing/aboutPrivateBrowsing.css (../shared/privatebrowsing/aboutPrivateBrowsing.css)
   skin/classic/browser/privatebrowsing/favicon.svg             (../shared/privatebrowsing/favicon.svg)
   skin/classic/browser/privatebrowsing/private-browsing.svg    (../shared/privatebrowsing/private-browsing.svg)
+  skin/classic/browser/install-ssb.svg                         (../shared/install-ssb.svg)

browser/themes/shared/urlbar-searchbar.inc.css

@@ -398,6 +398,11 @@
   --arrowpanel-background: #fbfbfb;
 }
 
+#pageAction-panel-launchSSB,
+#pageAction-urlbar-launchSSB {
+  list-style-image: url("chrome://browser/skin/install-ssb.svg");
+}
+
 /* URL bar and page action buttons */
 
 #page-action-buttons {