Fix a bug that viewed Omnibox hint when hint loses focus

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

 // 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.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_LOCATION_BAR_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_LOCATION_BAR_VIEW_H_
 
 #include <stddef.h>
 
 #include <string>
@@ skipping 320 matching lines @@
   // Used to "reverse" the URL showing/hiding animations, since we use separate
   // animations whose curves are not true inverses of each other.  Based on the
   // current position of the omnibox, calculates what value the desired
   // animation (|hide_url_animation_| if |hide| is true, |show_url_animation_|
   // if it's false) should be set to in order to produce the same omnibox
   // position.  This way we can stop the old animation, set the new animation to
   // this value, and start it running, and the text will appear to reverse
   // directions from its current location.
   double GetValueForAnimation(bool hide) const;
 
+  void UpdatedKeywordHintVisibility();

[Peter Kasting, 2016/10/02 19:01:37]

Add comment about what this does.

+
   // LocationBar:
   void ShowFirstRunBubble() override;
   GURL GetDestinationURL() const override;
   WindowOpenDisposition GetWindowOpenDisposition() const override;
   ui::PageTransition GetPageTransition() const override;
   void AcceptInput() override;
   void FocusSearch() override;
   void UpdateContentSettingsIcons() override;
   void UpdateManagePasswordsIconAndBubble() override;
   void UpdateSaveCreditCardIcon() override;
@@ skipping 12 matching lines @@
   int PageActionVisibleCount() override;
   ExtensionAction* GetPageAction(size_t index) override;
   ExtensionAction* GetVisiblePageAction(size_t index) override;
   void TestPageActionPressed(size_t index) override;
   bool GetBookmarkStarVisibility() override;
 
   // views::View:
   const char* GetClassName() const override;
   void OnBoundsChanged(const gfx::Rect& previous_bounds) override;
   void OnFocus() override;
+  void OnBlur() override;
   void OnPaint(gfx::Canvas* canvas) override;
 
   // views::DragController:
   void WriteDragDataForView(View* sender,
                             const gfx::Point& press_pt,
                             OSExchangeData* data) override;
   int GetDragOperationsForView(View* sender, const gfx::Point& p) override;
   bool CanStartDragForView(View* sender,
                            const gfx::Point& press_pt,
                            const gfx::Point& p) override;
@@ skipping 95 matching lines @@
   bool web_contents_null_at_last_refresh_;
 
   // These allow toggling the verbose security state behavior via flags.
   bool should_show_secure_state_;
   bool should_animate_secure_state_;
 
   DISALLOW_COPY_AND_ASSIGN(LocationBarView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_LOCATION_BAR_LOCATION_BAR_VIEW_H_