DevTools: [SSP] fix Ctrl-Click navigation over selector

The codemirror got frozen because selection from its
input text area was stolen via "add new property" editing functionality.

BUG=402838
R=apavlov, vsevik

Review URL: https://codereview.chromium.org/476893002

git-svn-id: svn://svn.chromium.org/blink/trunk@180343 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/devtools/front_end/elements/StylesSidebarPane.js

@@ -1596,6 +1596,7 @@ WebInspector.StylePropertiesSection.prototype = {
             var rawLocation = new WebInspector.CSSLocation(target, this.rule.styleSheetId, this.rule.sourceURL, this.rule.lineNumberInSource(index), this.rule.columnNumberInSource(index));
             var uiLocation = WebInspector.cssWorkspaceBinding.rawLocationToUILocation(rawLocation);
             WebInspector.Revealer.reveal(uiLocation);
+            event.consume(true);
             return;
         }
         this._startEditingOnMouseEvent();