Bug 1270619 - Remove .js from module IDs. r=pbro

MozReview-Commit-ID: x8zcFH2VjO

devtools/client/fronts/stylesheets.js

@@ -3,7 +3,7 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 "use strict";
 
-const { Front, FrontClassWithSpec } = require("devtools/shared/protocol.js");
+const { Front, FrontClassWithSpec } = require("devtools/shared/protocol");
 const {
   getIndentationFromPrefs,
   getIndentationFromString
@@ -13,10 +13,10 @@ const {
   mediaRuleSpec,
   styleSheetSpec,
   styleSheetsSpec
-} = require("devtools/shared/specs/stylesheets.js");
+} = require("devtools/shared/specs/stylesheets");
 const promise = require("promise");
 const { Task } = require("resource://gre/modules/Task.jsm");
-const events = require("sdk/event/core.js");
+const events = require("sdk/event/core");
 
 /**
  * The client-side counterpart for an OriginalSourceActor.

devtools/shared/specs/stylesheets.js

@@ -8,7 +8,7 @@ const {
   RetVal,
   generateActorSpec,
   types
-} = require("devtools/shared/protocol.js");
+} = require("devtools/shared/protocol");
 
 const originalSourceSpec = generateActorSpec({
   typeName: "originalsource",