Migrate ui::Transform to gfx::Transform

ash/system/web_notification/web_notification_view.cc

 // 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.
 
 #include "ash/system/web_notification/web_notification_view.h"
 
 #include "ash/system/tray/tray_constants.h"
 #include "ash/system/tray/tray_views.h"
 #include "ash/system/web_notification/web_notification.h"
 #include "ash/system/web_notification/web_notification_tray.h"
@@ skipping 227 matching lines @@
 
   if (!event.IsScrollGestureEvent())
     return ui::ER_UNHANDLED;
 
   if (event.type() == ui::ET_GESTURE_SCROLL_BEGIN) {
     gesture_scroll_amount_ = 0.f;
   } else if (event.type() == ui::ET_GESTURE_SCROLL_UPDATE) {
     // The scroll-update events include the incremental scroll amount.
     gesture_scroll_amount_ += event.details().scroll_x();
 
-    ui::Transform transform;
+    gfx::Transform transform;
     transform.SetTranslateX(gesture_scroll_amount_);
     layer()->SetTransform(transform);
     layer()->SetOpacity(
         1.f - std::min(fabsf(gesture_scroll_amount_) / width(), 1.f));
 
   } else if (event.type() == ui::ET_GESTURE_SCROLL_END) {
     const float kScrollRatioForClosingNotification = 0.5f;
     float scrolled_ratio = fabsf(gesture_scroll_amount_) / width();
     if (scrolled_ratio >= kScrollRatioForClosingNotification)
       SlideOutAndClose(gesture_scroll_amount_ < 0 ? SLIDE_LEFT : SLIDE_RIGHT);
@@ skipping 32 matching lines @@
       views::MenuItemView::TOPRIGHT,
       views::MenuRunner::HAS_MNEMONICS));
 }
 
 void WebNotificationView::RestoreVisualState() {
   // Restore the layer state.
   const int kSwipeRestoreDurationMS = 150;
   ui::ScopedLayerAnimationSettings settings(layer()->GetAnimator());
   settings.SetTransitionDuration(
       base::TimeDelta::FromMilliseconds(kSwipeRestoreDurationMS));
-  layer()->SetTransform(ui::Transform());
+  layer()->SetTransform(gfx::Transform());
   layer()->SetOpacity(1.f);
 }
 
 void WebNotificationView::SlideOutAndClose(SlideDirection direction) {
   const int kSwipeOutTotalDurationMS = 150;
   int swipe_out_duration = kSwipeOutTotalDurationMS * layer()->opacity();
   ui::ScopedLayerAnimationSettings settings(layer()->GetAnimator());
   settings.SetTransitionDuration(
       base::TimeDelta::FromMilliseconds(swipe_out_duration));
   settings.AddObserver(this);
 
-  ui::Transform transform;
+  gfx::Transform transform;
   transform.SetTranslateX(direction == SLIDE_LEFT ? -width() : width());
   layer()->SetTransform(transform);
   layer()->SetOpacity(0.f);
 }
 
 }  // namespace message_center
 
 }  // namespace ash