Hide the "Open PDF in Reader" bubble on navigations.

chrome/browser/ui/views/location_bar/open_pdf_in_reader_view.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/views/location_bar/open_pdf_in_reader_view.h"
 
 #include "chrome/browser/ui/views/open_pdf_in_reader_bubble_view.h"
 #include "chrome/grit/generated_resources.h"
 #include "components/pdf/browser/open_pdf_in_reader_prompt_client.h"
 #include "components/pdf/browser/pdf_web_contents_helper.h"
@@ skipping 17 matching lines @@
 
 void OpenPDFInReaderView::Update(content::WebContents* web_contents) {
   model_ = NULL;
   if (web_contents) {
     pdf::PDFWebContentsHelper* pdf_tab_helper =
         pdf::PDFWebContentsHelper::FromWebContents(web_contents);
     model_ = pdf_tab_helper->open_in_reader_prompt();
   }
 
   SetVisible(!!model_);
+
+  // Hide the bubble if it is currently shown and the icon is hidden.
+  if (!model_ && bubble_)
+    bubble_->GetWidget()->Hide();
 }
 
 void OpenPDFInReaderView::ShowBubble() {
   if (bubble_)
     return;
 
   DCHECK(model_);
   bubble_ = new OpenPDFInReaderBubbleView(this, model_);
   views::BubbleDelegateView::CreateBubble(bubble_);
   bubble_->GetWidget()->AddObserver(this);
@@ skipping 25 matching lines @@
   return true;
 }
 
 void OpenPDFInReaderView::OnWidgetDestroying(views::Widget* widget) {
   if (!bubble_)
     return;
 
   bubble_->GetWidget()->RemoveObserver(this);
   bubble_ = NULL;
 }