Add a "close all tabs to the left" button + fix compile error

application/basilisk/base/content/browser.js

@@ -7441,6 +7441,12 @@ var TabContextMenu = {
     document.getElementById("context_pinTab").hidden = this.contextTab.pinned;
     document.getElementById("context_unpinTab").hidden = !this.contextTab.pinned;
 
+    // Disable "Close Tabs to the Left" if there are no tabs before it,
+    // and hide it when the user rightclicked on a pinned tab.
+    document.getElementById("context_closeTabsToTheStart").disabled =
+      gBrowser.getTabsToTheStartFrom(this.contextTab).length == 0;
+    document.getElementById("context_closeTabsToTheStart").hidden = this.contextTab.pinned;
+
     // Disable "Close Tabs to the Right" if there are no tabs
     // following it and hide it when the user rightclicked on a pinned
     // tab.

application/basilisk/base/content/browser.xul

@@ -112,6 +112,8 @@
                 label="&bookmarkAllTabs.label;"
                 accesskey="&bookmarkAllTabs.accesskey;"
                 command="Browser:BookmarkAllTabs"/>
+      <menuitem id="context_closeTabsToTheStart" label="&closeTabsToTheStart.label;" accesskey="&closeTabsToTheStart.accesskey;"
+                oncommand="gBrowser.removeTabsToTheStartFrom(TabContextMenu.contextTab, {animate: true});"/>
       <menuitem id="context_closeTabsToTheEnd" label="&closeTabsToTheEnd.label;" accesskey="&closeTabsToTheEnd.accesskey;"
                 oncommand="gBrowser.removeTabsToTheEndFrom(TabContextMenu.contextTab, {animate: true});"/>
       <menuitem id="context_closeOtherTabs" label="&closeOtherTabs.label;" accesskey="&closeOtherTabs.accesskey;"

application/basilisk/base/content/tabbrowser.xml

@@ -55,7 +55,7 @@
         ]]></getter>
       </property>
 
-      <field name="closingTabsEnum" readonly="true">({ ALL: 0, OTHER: 1, TO_END: 2 });</field>
+      <field name="closingTabsEnum" readonly="true">({ ALL: 0, OTHER: 1, TO_START: 2, TO_END: 3 });</field>
 
       <field name="_visibleTabs">null</field>
 
@@ -2310,6 +2310,12 @@
             case this.closingTabsEnum.OTHER:
               tabsToClose = this.visibleTabs.length - 1 - gBrowser._numPinnedTabs;
               break;
+            case this.closingTabsEnum.TO_START:
+              if (!aTab)
+                throw new Error("Required argument missing: aTab");
+
+              tabsToClose = this.getTabsToTheStartFrom(aTab).length;
+              break;
             case this.closingTabsEnum.TO_END:
               if (!aTab)
                 throw new Error("Required argument missing: aTab");
@@ -2366,6 +2372,36 @@
       </body>
       </method>
 
+      <method name="getTabsToTheStartFrom">
+        <parameter name="aTab"/>
+        <body>
+          <![CDATA[
+            var tabsToStart = [];
+            let tabs = this.visibleTabs;
+            for (let i = 0; tabs[i] != aTab && i < tabs.length; ++i) {
+              if (!tabs[i].pinned)
+                tabsToStart.push(tabs[i]);
+            }
+            return tabsToStart;
+          ]]>
+        </body>
+      </method>
+
+      <method name="removeTabsToTheStartFrom">
+        <parameter name="aTab"/>
+        <parameter name="aParams"/>
+        <body>
+          <![CDATA[
+            if (this.warnAboutClosingTabs(this.closingTabsEnum.TO_START, aTab)) {
+              let tabs = this.getTabsToTheStartFrom(aTab);
+              for (let i = tabs.length - 1; i >= 0; --i) {
+                this.removeTab(tabs[i], aParams);
+              }
+            }
+          ]]>
+        </body>
+      </method>
+
       <method name="getTabsToTheEndFrom">
         <parameter name="aTab"/>
         <body>

application/basilisk/locales/en-US/chrome/browser/browser.dtd

@@ -23,6 +23,11 @@
 <!ENTITY  reloadTab.accesskey                "R">
 <!ENTITY  reloadAllTabs.label                "Reload All Tabs">
 <!ENTITY  reloadAllTabs.accesskey            "A">
+<!-- LOCALIZATION NOTE (closeTabsToTheStart.label): This should indicate the
+direction in which tabs are closed, i.e. locales that use RTL mode should say
+right instead of left. -->
+<!ENTITY  closeTabsToTheStart.label          "Close Tabs to the Left">
+<!ENTITY  closeTabsToTheStart.accesskey      "L">
 <!-- LOCALIZATION NOTE (closeTabsToTheEnd.label): This should indicate the
 direction in which tabs are closed, i.e. locales that use RTL mode should say
 left instead of right. -->

toolkit/components/webextensions/webrequest/StreamFilterParent.cpp

@@ -250,8 +250,9 @@ bool StreamFilterParent::RecvClose() {
 void StreamFilterParent::Destroy() {
   // Close the channel asynchronously so the actor is never destroyed before
   // this message is fully processed.
-  ActorThread()->Dispatch(NewRunnableMethod(this,
+  ActorThread()->Dispatch(NS_NewRunnableFunction([self = RefPtr<StreamFilterParent>(this)]() {
-                                            &StreamFilterParent::Close),
+    self->Close();
+  }),
                           NS_DISPATCH_NORMAL);
 }
 
@@ -354,8 +355,8 @@ void StreamFilterParent::FinishDisconnect() {
 bool StreamFilterParent::RecvWrite(Data&& aData) {
   AssertIsActorThread();
 
-  RunOnIOThread(NS_NewRunnableFunction([this, data = std::move(aData)]() mutable {
+  RunOnIOThread(NS_NewRunnableFunction([self = RefPtr<StreamFilterParent>(this), data = std::move(aData)]() mutable {
-    WriteMove(std::move(data));
+    self->WriteMove(std::move(data));
   }));
   return true;
 }
@@ -612,8 +613,8 @@ StreamFilterParent::OnDataAvailable(nsIRequest* aRequest,
     return NS_ERROR_FAILURE;
   } else {
     ActorThread()->Dispatch(
-        NS_NewRunnableFunction([this, data = std::move(data)]() mutable {
+        NS_NewRunnableFunction([self = RefPtr<StreamFilterParent>(this), data = std::move(data)]() mutable {
-          DoSendData(std::move(data));
+          self->DoSendData(std::move(data));
         }),
         NS_DISPATCH_NORMAL);
   }