DevTools: extract modules (with extensions)

third_party/WebKit/Source/devtools/front_end/externs.js

Index: third_party/WebKit/Source/devtools/front_end/externs.js
diff --git a/third_party/WebKit/Source/devtools/front_end/externs.js b/third_party/WebKit/Source/devtools/front_end/externs.js
index 8d3f1800d38047758de6caa5c232c65502450455..642c3440ff27210dded4816f9ed9b163bea4ecb9 100644
--- a/third_party/WebKit/Source/devtools/front_end/externs.js
+++ b/third_party/WebKit/Source/devtools/front_end/externs.js
@@ -861,6 +861,8 @@ var Main = {};
 /** @type {!Object} */
 var Network = {};
 /** @type {!Object} */
+var Perf_UI = {};
+/** @type {!Object} */
 var Persistence = {};
 /** @type {!Object} */
 var Platform = {};
@@ -869,6 +871,8 @@ var Profiler = {};
 /** @type {!Object} */
 var Protocol = {};
 /** @type {!Object} */
+var QuickOpen = {};
+/** @type {!Object} */
 var Resources = {};
 /** @type {!Object} */
 var Sass = {};