Bug 1267293 - Turn the DOM panel off by default;r=bgrins

MozReview-Commit-ID: DOYF2vTUEqq

devtools/client/debugger/test/mochitest/browser_dbg_addon-panels.js

@@ -26,7 +26,7 @@ function test() {
 
     // Check only valid tabs are shown
     let tabs = addonDebugger.frame.contentDocument.getElementById("toolbox-tabs").children;
-    let expectedTabs = ["webconsole", "jsdebugger", "scratchpad", "dom"];
+    let expectedTabs = ["webconsole", "jsdebugger", "scratchpad"];
 
     is(tabs.length, expectedTabs.length, "displaying only " + expectedTabs.length + " tabs in addon debugger");
     Array.forEach(tabs, (tab, i) => {

devtools/client/dom/test/head.js

@@ -17,11 +17,15 @@ Services.scriptloader.loadSubScript(
 const constants = require("devtools/client/dom/content/constants");
 
 // Uncomment this pref to dump all devtools emitted events to the console.
-// Services.prefs.setBoolPref("devtools.dump.emit", true);
+// Services.prefs.setBoolPref("devtools.dom.enabled", true);
+
+// Enable the DOM panel
+Services.prefs.setBoolPref("devtools.dom.enabled", true);
 
 registerCleanupFunction(() => {
   info("finish() was called, cleaning up...");
   Services.prefs.clearUserPref("devtools.dump.emit");
+  Services.prefs.clearUserPref("devtools.dom.enabled");
 });
 
 /**

devtools/client/preferences/devtools.js

@@ -213,6 +213,9 @@ pref("devtools.webaudioeditor.enabled", false);
 // Enable Scratchpad
 pref("devtools.scratchpad.enabled", false);
 
+// Make sure the DOM panel is hidden by default
+pref("devtools.dom.enabled", false);
+
 // Web Audio Editor Inspector Width should be a preference
 pref("devtools.webaudioeditor.inspectorWidth", 300);