DevTools: allow reattaching main target live.

third_party/WebKit/Source/devtools/front_end/worker_service/ServiceDispatcher.js

Index: third_party/WebKit/Source/devtools/front_end/worker_service/ServiceDispatcher.js
diff --git a/third_party/WebKit/Source/devtools/front_end/worker_service/ServiceDispatcher.js b/third_party/WebKit/Source/devtools/front_end/worker_service/ServiceDispatcher.js
index fe4ff440426e7f92706798151ad600cd8c72b3ae..a9e36f3100106170f712db99e66c52251ad63d70 100644
--- a/third_party/WebKit/Source/devtools/front_end/worker_service/ServiceDispatcher.js
+++ b/third_party/WebKit/Source/devtools/front_end/worker_service/ServiceDispatcher.js
@@ -8,6 +8,9 @@
 function Service() { }
 
 Service.prototype = {
+    /**
+     * @return {!Promise}
+     */
     dispose: function() { }
 }
 
@@ -46,7 +49,7 @@ ServiceDispatcher.prototype = {
                 return;
             }
             this._dispatchMessage(message);
-        } catch(e) {
+        } catch (e) {
             this._sendErrorResponse(message["id"], e.toString());
         }
     },