Bug 1445776 - Add development restart shortcut to Browser Console. r=bgrins

Adds the browser restart shortcut (Cmd / Ctrl + Alt + R) to the Browser Console
window.  Only enabled for local development builds.

MozReview-Commit-ID: 2oTT55TYCx6

--HG--
extra : rebase_source : a9864af63590c803a412959bf922c87859455448

devtools/client/shared/key-shortcuts.js

@@ -135,8 +135,16 @@ KeyShortcuts.parseElectronKey = function(window, str) {
   }
 
   if (typeof key === "string" && key.length === 1) {
-    // Match any single character
-    shortcut.key = key.toLowerCase();
+    if (shortcut.alt) {
+      // When Alt is involved, some platforms (macOS) give different printable characters
+      // for the `key` value, like `®` for the key `R`.  In this case, prefer matching by
+      // `keyCode` instead.
+      shortcut.keyCode = KeyCodes[`DOM_VK_${key.toUpperCase()}`];
+      shortcut.keyCodeString = key;
+    } else {
+      // Match any single character
+      shortcut.key = key.toLowerCase();
+    }
   } else if (key in ElectronKeysMapping) {
     // Maps the others manually to DOM API DOM_VK_*
     key = ElectronKeysMapping[key];

devtools/client/webconsole/new-webconsole.js

@@ -253,6 +253,16 @@ NewWebConsoleFrame.prototype = {
                    this.window.top.close.bind(this.window.top));
 
       ZoomKeys.register(this.window);
+
+      if (!system.constants.MOZILLA_OFFICIAL) {
+        // In local builds, inject the "quick restart" shortcut.
+        // This script expects to have Services on the global and we haven't yet imported
+        // it into the window, so assign it.
+        this.window.Services = Services;
+        Services.scriptloader.loadSubScript(
+          "chrome://browser/content/browser-development-helpers.js", this.window);
+        shortcuts.on("CmdOrCtrl+Alt+R", this.window.DevelopmentHelpers.quickRestart);
+      }
     } else if (Services.prefs.getBoolPref(PREF_SIDEBAR_ENABLED)) {
       shortcuts.on("Esc", event => {
         if (!this.jsterm.autocompletePopup || !this.jsterm.autocompletePopup.isOpen) {