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

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

Index: chrome/browser/ui/views/location_bar/open_pdf_in_reader_view.cc
diff --git a/chrome/browser/ui/views/location_bar/open_pdf_in_reader_view.cc b/chrome/browser/ui/views/location_bar/open_pdf_in_reader_view.cc
index 2be219f62ea0e5b08e6d1a96bfa47297fb7fb874..f4a3c64aea9bb5a48c01ad15f9ec321adc887dfa 100644
--- a/chrome/browser/ui/views/location_bar/open_pdf_in_reader_view.cc
+++ b/chrome/browser/ui/views/location_bar/open_pdf_in_reader_view.cc
@@ -35,6 +35,10 @@ void OpenPDFInReaderView::Update(content::WebContents* web_contents) {
   }
 
   SetVisible(!!model_);
+
+  // Hide the bubble if it is currently shown and the icon is hidden.
+  if (!model_ && bubble_)
+    bubble_->GetWidget()->Hide();
 }
 
 void OpenPDFInReaderView::ShowBubble() {