ui: Use a PaintRecorder to access the Canvas for painting.

ui/views/bubble/tray_bubble_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 "ui/views/bubble/tray_bubble_view.h"
 
 #include <algorithm>
 
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "third_party/skia/include/core/SkPaint.h"
 #include "third_party/skia/include/core/SkPath.h"
 #include "third_party/skia/include/effects/SkBlurImageFilter.h"
 #include "ui/accessibility/ax_view_state.h"
 #include "ui/aura/window.h"
 #include "ui/compositor/layer.h"
 #include "ui/compositor/layer_delegate.h"
-#include "ui/compositor/paint_context.h"
+#include "ui/compositor/paint_recorder.h"
 #include "ui/events/event.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/geometry/insets.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/path.h"
 #include "ui/gfx/skia_util.h"
 #include "ui/views/bubble/bubble_frame_view.h"
 #include "ui/views/bubble/bubble_window_targeter.h"
 #include "ui/views/layout/box_layout.h"
 #include "ui/views/widget/widget.h"
@@ skipping 170 matching lines @@
     : layer_(ui::LAYER_TEXTURED),
       corner_radius_(corner_radius) {
   layer_.set_delegate(this);
 }
 
 TrayBubbleContentMask::~TrayBubbleContentMask() {
   layer_.set_delegate(NULL);
 }
 
 void TrayBubbleContentMask::OnPaintLayer(const ui::PaintContext& context) {
+  ui::PaintRecorder recorder(context);
   SkPaint paint;
   paint.setAlpha(255);
   paint.setStyle(SkPaint::kFill_Style);
   gfx::Rect rect(layer()->bounds().size());
-  context.canvas()->DrawRoundRect(rect, corner_radius_, paint);
+  recorder.canvas()->DrawRoundRect(rect, corner_radius_, paint);
 }
 
 void TrayBubbleContentMask::OnDeviceScaleFactorChanged(
     float device_scale_factor) {
   // Redrawing will take care of scale factor change.
 }
 
 base::Closure TrayBubbleContentMask::PrepareForLayerBoundsChange() {
   return base::Closure();
 }
@@ skipping 275 matching lines @@
 void TrayBubbleView::ViewHierarchyChanged(
     const ViewHierarchyChangedDetails& details) {
   if (details.is_add && details.child == this) {
     details.parent->SetPaintToLayer(true);
     details.parent->SetFillsBoundsOpaquely(true);
     details.parent->layer()->SetMasksToBounds(true);
   }
 }
 
 }  // namespace views