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

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

Index: chrome/browser/ui/views/location_bar/origin_chip_view.h
diff --git a/chrome/browser/ui/views/location_bar/origin_chip_view.h b/chrome/browser/ui/views/location_bar/origin_chip_view.h
index bb2d19d27631a2f29c39a7aebaae31284e4fd5b9..c7f610bf33e2ebcad802a85f3623c2970951670a 100644
--- a/chrome/browser/ui/views/location_bar/origin_chip_view.h
+++ b/chrome/browser/ui/views/location_bar/origin_chip_view.h
@@ -22,6 +22,7 @@ class WebContents;
 namespace gfx {
 class Canvas;
 class FontList;
+class SlideAnimation;
 }
 
 namespace views {
@@ -65,9 +66,18 @@ class OriginChipView : public views::LabelButton,
   // width, since the hostname will not be elided past the TLD+1.
   int ElideDomainTarget(int target_max_width);
 
+  // Starts an animation that fades in the border.
+  void FadeIn();
+
+  // Returns the current X position of the host label.
+  int LabelPosition();
+
   // views::LabelButton:
+  virtual void AnimationProgressed(const gfx::Animation* animation) OVERRIDE;
+  virtual void AnimationEnded(const gfx::Animation* animation) OVERRIDE;
   virtual gfx::Size GetPreferredSize() OVERRIDE;
   virtual void Layout() OVERRIDE;
+  virtual void OnPaintBorder(gfx::Canvas* canvas) OVERRIDE;
 
   // views::ButtonListener:
   virtual void ButtonPressed(views::Button* sender,
@@ -92,6 +102,7 @@ class OriginChipView : public views::LabelButton,
   GURL url_displayed_;
   ToolbarModel::SecurityLevel security_level_;
   bool url_malware_;
+  scoped_ptr<gfx::SlideAnimation> fade_in_animation_;
 
   DISALLOW_COPY_AND_ASSIGN(OriginChipView);
 };