Devtools: [WIP] Implement enhanced devtools extension language APIs

Source/devtools/front_end/sources/SourcesView.js

Index: Source/devtools/front_end/sources/SourcesView.js
diff --git a/Source/devtools/front_end/sources/SourcesView.js b/Source/devtools/front_end/sources/SourcesView.js
index 1d3bf4588ee37412457949aa1b26b25deba2dbdf..5f578ae0ea53c4ffd8b94b4c09c413bc1abd5b41 100644
--- a/Source/devtools/front_end/sources/SourcesView.js
+++ b/Source/devtools/front_end/sources/SourcesView.js
@@ -78,6 +78,8 @@ WebInspector.SourcesView = function(workspace, sourcesPanel)
 
     this._shortcuts = {};
     this.element.addEventListener("keydown", this._handleKeyDown.bind(this), false);
+
+    this.addEventListener(WebInspector.SourcesView.Events.EditorSelected, WebInspector.languageService.updateInferredMime, WebInspector.languageService);
 }
 
 WebInspector.SourcesView.Events = {
@@ -95,7 +97,7 @@ WebInspector.SourcesView.uiSourceCodeHighlighterType = function(uiSourceCode)
     if (networkContentType)
         return networkContentType.canonicalMimeType();
 
-    var mimeType = WebInspector.ResourceType.mimeTypesForExtensions[uiSourceCode.extension().toLowerCase()];
+    var mimeType = WebInspector.ResourceType.mimeFromURL(uiSourceCode.uri());
     return mimeType || uiSourceCode.contentType().canonicalMimeType();
 }