Translate TextMate snippets in the worker thread

Might as well do as much work there as possible.

src/packages/snippets/src/load-snippets-handler.coffee

@@ -1,11 +1,14 @@
 fs = require 'fs'
+TextMatePackage = require 'text-mate-package'
 
 module.exports =
+  snippetsLoaded: (snippets) -> callTaskMethod('snippetsLoaded', snippets)
+
   loadTextmateSnippets: (path) ->
     snippetsDirPath = fs.join(path, 'Snippets')
     snippets = fs.list(snippetsDirPath).map (snippetPath) ->
       fs.readPlist(snippetPath)
-    @snippetsLoaded(snippets)
+    @snippetsLoaded(@translateTextmateSnippets(snippets))
 
   loadAtomSnippets: (path) ->
     snippetsDirPath = fs.join(path, 'snippets')
@@ -18,4 +21,14 @@ module.exports =
         console.warn "Error reading snippets file '#{snippetsPath}'"
     @snippetsLoaded(snippets)
 
-  snippetsLoaded: (snippets) -> callTaskMethod('snippetsLoaded', snippets)
+  translateTextmateSnippets: (tmSnippets) ->
+    atomSnippets = {}
+    for { scope, name, content, tabTrigger } in tmSnippets
+      if scope
+        scope = TextMatePackage.cssSelectorFromScopeSelector(scope)
+      else
+        scope = '*'
+
+      snippetsForScope = (atomSnippets[scope] ?= {})
+      snippetsForScope[name] = { prefix: tabTrigger, body: content }
+    [atomSnippets]

src/packages/snippets/src/load-snippets-task.coffee

@@ -24,19 +24,5 @@ class LoadSnippetsTask extends Task
     @callWorkerMethod(method, @packageBeingLoaded.path)
 
   snippetsLoaded: (snippets) ->
-    if @packageBeingLoaded instanceof TextMatePackage
-      snippets = @translateTextmateSnippets(snippets)
     @snippets.add(snippet) for snippet in snippets
     @loadNextPackageSnippets()
-
-  translateTextmateSnippets: (tmSnippets) ->
-    atomSnippets = {}
-    for { scope, name, content, tabTrigger } in tmSnippets
-      if scope
-        scope = TextMatePackage.cssSelectorFromScopeSelector(scope)
-      else
-        scope = '*'
-
-      snippetsForScope = (atomSnippets[scope] ?= {})
-      snippetsForScope[name] = { prefix: tabTrigger, body: content }
-    [atomSnippets]