code cleanup: deprecate bunch of old styles

These all have either better replacements or can be done without the style

chrome/deprecated/navbar_tabs_oneliner_tabs_on_left.css

@@ -0,0 +1,115 @@
+/* Source file https://github.com/MrOtherGuy/firefox-csshacks/tree/master/chrome/navbar_tabs_oneliner_tabs_on_left.css made available under Mozilla Public License v. 2.0
+See the above repository for updates as well as full license text. */
+
+/*Make tabs and navbar appear side-by-side tabs on left */
+
+/* IMPORTANT */
+/*
+Get window_control_placeholder_support.css
+Window controls will be all wrong without it
+*/
+
+:root[uidensity="compact"]{
+  --tab-block-margin: 2px !important;
+  }
+
+/* Modify these to change relative widths or default height */
+#navigator-toolbox{
+  --uc-navigationbar-width: 45vw;
+  --uc-toolbar-height: 40px;
+  --uc-urlbar-min-width: 50vw; /* minimum width for opened urlbar */
+}
+#titlebar{
+  will-change: unset !important;
+  transition: none !important;
+  opacity: 1 !important;
+}
+#scrollbutton-up,
+#scrollbutton-down{ border-block-width: 2px !important; }
+
+/* Override for other densities */
+:root[uidensity="compact"] #navigator-toolbox{ --uc-toolbar-height: 34px;}
+:root[uidensity="touch"] #navigator-toolbox{ --uc-toolbar-height: 44px; }
+
+:root[uidensity="compact"] #urlbar-container{
+  --urlbar-container-height: var(--uc-toolbar-height) !important;
+  padding-block: 0 !important;
+}
+:root[uidensity="compact"] #urlbar{
+  --urlbar-container-height: var(--uc-toolbar-height) !important;
+}
+
+/* prevent urlbar overflow on narrow windows */
+/* Dependent on how many items are in navigation toolbar and tabs-/nav-bar ratio - ADJUST AS NEEDED */
+@media screen and (max-width: 1600px){
+  #urlbar-container{ min-width:unset !important }
+}
+
+:root[tabsintitlebar] #toolbar-menubar{
+  height: initial !important;
+}
+:root[tabsintitlebar] #toolbar-menubar[inactive] > :not(.titlebar-buttonbox-container){
+  opacity: 0;
+  pointer-events: none;
+}
+:root[tabsintitlebar] #toolbar-menubar[inactive]{
+  margin-bottom: calc(0px - var(--uc-toolbar-height));
+}
+
+#TabsToolbar > .titlebar-buttonbox-container,
+.titlebar-spacer[type="post-tabs"]{
+  display: none;
+}
+#TabsToolbar{
+  margin-right: var(--uc-navigationbar-width);
+  --tabs-navbar-shadow-size: 0px;
+}
+
+#tabbrowser-tabs{
+  --tab-min-height: calc(var(--uc-toolbar-height) - 2 * var(--tab-block-margin,0px)) !important;
+}
+
+#toolbar-menubar[autohide="true"] > .titlebar-buttonbox-container{
+  min-height: var(--uc-toolbar-height) !important
+}
+#tabbrowser-tabs,
+.tabbrowser-tab[pinned]{
+  min-height: var(--tab-min-height) !important;
+}
+#nav-bar{
+  margin-left: calc(100vw - var(--uc-navigationbar-width));
+  margin-top: calc(0px - var(--uc-toolbar-height));
+}
+
+/* Override style set in window_control_placeholder_support.css  */
+#nav-bar{ border-left-width: 0px !important }
+#nav-bar::before{ display:none !important }
+
+/* Rules specific to window controls on left layout */
+@media (-moz-bool-pref: "userchrome.force-window-controls-on-left.enabled"),
+       (-moz-platform: macos),
+       (-moz-gtk-csd-reversed-placement){
+  :root:not([inFullscreen]) #TabsToolbar-customization-target > .titlebar-spacer[type="pre-tabs"]{
+    width: var(--uc-window-drag-space-post) !important;
+    display: flex !important; 
+  }
+  #TabsToolbar > .titlebar-buttonbox-container{
+    display: flex;
+  }
+}
+
+/* 1px margin on touch density causes tabs to be too high */
+.tab-close-button{ margin-top: 0 !important }
+
+/* Make opened urlbar overlay the toolbar */
+#urlbar[open]:focus-within{
+  min-width: var(--uc-urlbar-min-width,none) !important;
+  right: 0 !important;
+  left: auto !important;
+}
+
+/* Hide dropdown placeholder */
+#urlbar-container:not(:hover) .urlbar-history-dropmarker{ margin-inline-start: -28px; }
+
+/* Fix customization view */
+#customization-panelWrapper > .panel-arrowbox > .panel-arrow{ margin-inline-end: initial !important; }