[OriginChip] Add animations for the hiding and showing of the chip.

chrome/browser/ui/views/omnibox/omnibox_view_views.h

Index: chrome/browser/ui/views/omnibox/omnibox_view_views.h
diff --git a/chrome/browser/ui/views/omnibox/omnibox_view_views.h b/chrome/browser/ui/views/omnibox/omnibox_view_views.h
index 350c7cfb66668ae5b75bb577cdbe1adb5512adc4..43972456bd63665ffee5275a62644e9cce0002a1 100644
--- a/chrome/browser/ui/views/omnibox/omnibox_view_views.h
+++ b/chrome/browser/ui/views/omnibox/omnibox_view_views.h
@@ -12,6 +12,7 @@
 #include "chrome/browser/ui/omnibox/omnibox_view.h"
 #include "chrome/browser/ui/toolbar/toolbar_model.h"
 #include "ui/base/window_open_disposition.h"
+#include "ui/gfx/animation/animation_delegate.h"
 #include "ui/gfx/range/range.h"
 #include "ui/views/controls/textfield/textfield.h"
 #include "ui/views/controls/textfield/textfield_controller.h"
@@ -24,6 +25,10 @@ class LocationBarView;
 class OmniboxPopupView;
 class Profile;
 
+namespace gfx {
+class SlideAnimation;
+}
+
 namespace ui {
 class OSExchangeData;
 }  // namespace ui
@@ -32,6 +37,7 @@ class OSExchangeData;
 class OmniboxViewViews
     : public views::Textfield,
       public OmniboxView,
+      public gfx::AnimationDelegate,
 #if defined(OS_CHROMEOS)
       public
           chromeos::input_method::InputMethodManager::CandidateWindowObserver,
@@ -52,8 +58,16 @@ class OmniboxViewViews
   // Initialize, create the underlying views, etc;
   void Init();
 
+  // Starts an animation that fades in the entire Omnibox.

[Peter Kasting, 2014/03/21 21:22:10]

Nit: entire Omnibox -> OmniboxView

("entire omnibox" sounds like it includes things like the borders and extension
icons that are technically part of the LocationBar)

[Justin Donnelly, 2014/03/24 22:59:37]

Done.

+  void FadeIn();
+
+  // gfx::AnimationDelegate::

[Peter Kasting, 2014/03/21 21:22:10]

Nit: List these override sections in the same order as the superclass
declarations

[Justin Donnelly, 2014/03/24 22:59:37]

Done.

+  virtual void AnimationProgressed(const gfx::Animation* animation) OVERRIDE;
+  virtual void AnimationEnded(const gfx::Animation* animation) OVERRIDE;
+
   // views::Textfield:
   virtual const char* GetClassName() const OVERRIDE;
+  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
   virtual bool OnMousePressed(const ui::MouseEvent& event) OVERRIDE;
   virtual bool OnMouseDragged(const ui::MouseEvent& event) OVERRIDE;
   virtual void OnMouseReleased(const ui::MouseEvent& event) OVERRIDE;
@@ -204,6 +218,8 @@ class OmniboxViewViews
   // and gets a tap. So we use this variable to remember focus state before tap.
   bool select_all_on_gesture_tap_;
 
+  scoped_ptr<gfx::SlideAnimation> fade_in_animation_;
+
   DISALLOW_COPY_AND_ASSIGN(OmniboxViewViews);
 };