Enable the translate bubble to be dismissed when user ignores it.

chrome/browser/ui/views/location_bar/location_bar_bubble_delegate_view.h

 // Copyright 2014 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.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_LOCATION_BAR_BUBBLE_DELEGATE_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_LOCATION_BAR_BUBBLE_DELEGATE_VIEW_H_
 
 #include "base/macros.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "ui/views/bubble/bubble_dialog_delegate.h"
+#include "ui/views/event_monitor.h"
 
 namespace content {
 class NotificationDetails;
 class NotificationSource;
 class WebContents;
 };
 
 // Base class for bubbles that are shown from location bar icons. The bubble
 // will automatically close when the browser transitions in or out of fullscreen
 // mode.
@@ skipping 20 matching lines @@
 
   // views::BubbleDialogDelegateView:
   int GetDialogButtons() const override;
 
   // content::NotificationObserver:
   void Observe(int type,
                const content::NotificationSource& source,
                const content::NotificationDetails& details) override;
 
  protected:
+  // The class listens for WebContentsView events and closes the bubble. Useful
+  // for bubbles that do not start out focused but need to close when the user
+  // interacts with the web view.
+  class WebContentMouseHandler : public ui::EventHandler {
+   public:
+    WebContentMouseHandler(LocationBarBubbleDelegateView* bubble,
+                           content::WebContents* web_contents);
+    ~WebContentMouseHandler() override;
+
+    void OnKeyEvent(ui::KeyEvent* event) override;
+    void OnMouseEvent(ui::MouseEvent* event) override;
+    void OnTouchEvent(ui::TouchEvent* event) override;
+
+   private:
+    LocationBarBubbleDelegateView* bubble_;
+    content::WebContents* web_contents_;
+    std::unique_ptr<views::EventMonitor> event_monitor_;
+
+    DISALLOW_COPY_AND_ASSIGN(WebContentMouseHandler);
+  };
+
   // Closes the bubble.
   virtual void CloseBubble();
 
   // If the bubble is not anchored to a view, places the bubble in the top right
   // (left in RTL) of the |screen_bounds| that contain web contents's browser
   // window. Because the positioning is based on the size of the bubble, this
   // must be called after the bubble is created.
   void AdjustForFullscreen(const gfx::Rect& screen_bounds);
 
  private:
   // Used to register for fullscreen change notifications.
   content::NotificationRegistrar registrar_;
 
   DISALLOW_COPY_AND_ASSIGN(LocationBarBubbleDelegateView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_LOCATION_BAR_BUBBLE_DELEGATE_VIEW_H_