[DevTools] Make UI.GlassPane position contentElement for different overlay controls.

third_party/WebKit/Source/devtools/front_end/ui/Toolbar.js

Index: third_party/WebKit/Source/devtools/front_end/ui/Toolbar.js
diff --git a/third_party/WebKit/Source/devtools/front_end/ui/Toolbar.js b/third_party/WebKit/Source/devtools/front_end/ui/Toolbar.js
index 8e6f552001bba2f712cf2fb3412318eddf459255..d8522e095bced596653c5d079349d7d1af0820c4 100644
--- a/third_party/WebKit/Source/devtools/front_end/ui/Toolbar.js
+++ b/third_party/WebKit/Source/devtools/front_end/ui/Toolbar.js
@@ -123,7 +123,8 @@ UI.Toolbar = class {
       var document = button.element.ownerDocument;
       document.documentElement.addEventListener('mouseup', mouseUp, false);
 
-      var optionsGlassPane = new UI.GlassPane(document);
+      var optionsGlassPane = new UI.GlassPane(document, false /* dimmed */, true /* blockPointerEvents */);
+      optionsGlassPane.show();
       var optionsBar = new UI.Toolbar('fill', optionsGlassPane.element);
       optionsBar._contentElement.classList.add('floating');
       const buttonHeight = 26;
@@ -167,7 +168,7 @@ UI.Toolbar = class {
       function mouseUp(e) {
         if (e.which !== 1)
           return;
-        optionsGlassPane.dispose();
+        optionsGlassPane.hide();
         document.documentElement.removeEventListener('mouseup', mouseUp, false);
 
         for (var i = 0; i < buttons.length; ++i) {