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

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

Index: chrome/browser/ui/views/omnibox/omnibox_view_views.cc
diff --git a/chrome/browser/ui/views/omnibox/omnibox_view_views.cc b/chrome/browser/ui/views/omnibox/omnibox_view_views.cc
index 4c724b1c1914dd00547042a6ae5a6a936a29c718..96fb1f23422e2dc0763084848436b7a6811461fc 100644
--- a/chrome/browser/ui/views/omnibox/omnibox_view_views.cc
+++ b/chrome/browser/ui/views/omnibox/omnibox_view_views.cc
@@ -40,6 +40,7 @@
 #include "ui/base/models/simple_menu_model.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/events/event.h"
+#include "ui/gfx/animation/slide_animation.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/font_list.h"
 #include "ui/gfx/selection_model.h"
@@ -179,6 +180,14 @@ void OmniboxViewViews::Init() {
   chromeos::input_method::InputMethodManager::Get()->
       AddCandidateWindowObserver(this);
 #endif
+
+  fade_in_animation_.reset(new gfx::SlideAnimation(this));
+  fade_in_animation_->SetTweenType(gfx::Tween::LINEAR);
+  fade_in_animation_->SetSlideDuration(300);
+}
+
+void OmniboxViewViews::FadeIn() {
+  fade_in_animation_->Show();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -188,6 +197,17 @@ const char* OmniboxViewViews::GetClassName() const {
   return kViewClassName;
 }
 
+void OmniboxViewViews::OnPaint(gfx::Canvas* canvas) {
+  if (fade_in_animation_->is_animating()) {
+    canvas->SaveLayerAlpha(static_cast<uint8>(
+        fade_in_animation_->CurrentValueBetween(0, 255)));
+    views::Textfield::OnPaint(canvas);
+    canvas->Restore();
+  } else {
+    views::Textfield::OnPaint(canvas);
+  }
+}
+
 bool OmniboxViewViews::OnMousePressed(const ui::MouseEvent& event) {
   select_all_on_mouse_release_ =
       (event.IsOnlyLeftMouseButton() || event.IsOnlyRightMouseButton()) &&
@@ -749,7 +769,7 @@ void OmniboxViewViews::ExecuteCommand(int command_id, int event_flags) {
       model()->PasteAndGo(GetClipboardText());
       break;
     case IDS_SHOW_URL:
-      ShowURL();
+      controller()->ShowURL();
       break;
     case IDC_EDIT_SEARCH_ENGINES:
       command_updater()->ExecuteCommand(command_id);
@@ -769,6 +789,17 @@ void OmniboxViewViews::ExecuteCommand(int command_id, int event_flags) {
 }
 
 ////////////////////////////////////////////////////////////////////////////////
+// OmniboxViewViews, gfx::AnimationDelegate implementation:
+
+void OmniboxViewViews::AnimationProgressed(const gfx::Animation* animation) {
+  SchedulePaint();
+}
+
+void OmniboxViewViews::AnimationEnded(const gfx::Animation* animation) {
+  fade_in_animation_->Reset();
+}
+
+////////////////////////////////////////////////////////////////////////////////
 // OmniboxViewViews, views::TextfieldController implementation:
 
 void OmniboxViewViews::ContentsChanged(views::Textfield* sender,