Remove Close button for chooser bubble and call CloseBubble when Cancel

chrome/browser/usb/web_usb_permission_bubble.cc

Index: chrome/browser/usb/web_usb_permission_bubble.cc
diff --git a/chrome/browser/usb/web_usb_permission_bubble.cc b/chrome/browser/usb/web_usb_permission_bubble.cc
index c7ca5417692c1b51659c01d91c19826a2c60c1ad..4afbf8ac05f9b4e615720a2af6f3c492fc688330 100644
--- a/chrome/browser/usb/web_usb_permission_bubble.cc
+++ b/chrome/browser/usb/web_usb_permission_bubble.cc
@@ -31,10 +31,13 @@ void ChromeWebUsbPermissionBubble::GetPermission(
   content::WebContents* web_contents =
       content::WebContents::FromRenderFrameHost(render_frame_host_);
   Browser* browser = chrome::FindBrowserWithWebContents(web_contents);
-  scoped_ptr<BubbleDelegate> bubble_delegate(new UsbChooserBubbleDelegate(
-      browser, device_filters.Pass(), render_frame_host_, callback));
+  scoped_ptr<UsbChooserBubbleDelegate> bubble_delegate(
+      new UsbChooserBubbleDelegate(browser, device_filters.Pass(),

[Ken Rockot(use gerrit already), 2015/12/15 06:24:05]

nit: since you're changing this code, please migrate to using std::move(foo)
instead of foo.Pass()

[juncai, 2015/12/15 17:23:39]

Done.

+                                   render_frame_host_, callback));
+  UsbChooserBubbleDelegate* bubble_delegate_ptr = bubble_delegate.get();
   BubbleReference bubble_reference =
       browser->GetBubbleManager()->ShowBubble(bubble_delegate.Pass());
+  bubble_delegate_ptr->set_bubble_reference(bubble_reference);
   bubbles_.push_back(bubble_reference);
 }