ash: Clean up naming of paint-related identifiers

ash/common/system/toast/toast_overlay.cc

 // Copyright 2016 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/common/system/toast/toast_overlay.h"
 
 #include "ash/common/shelf/wm_shelf.h"
 #include "ash/common/wm_lookup.h"
 #include "ash/common/wm_shell.h"
 #include "ash/common/wm_window.h"
@@ skipping 166 matching lines @@
     label->SetMaximumWidth(
         GetMaximumSize().width() - button_->GetPreferredSize().width() -
         kToastHorizontalSpacing * 2 - kToastHorizontalSpacing * 2);
     AddChildView(button_);
   }
 }
 
 ToastOverlayView::~ToastOverlayView() {}
 
 void ToastOverlayView::OnPaint(gfx::Canvas* canvas) {
-  cc::PaintFlags paint;
-  paint.setStyle(cc::PaintFlags::kFill_Style);
-  paint.setColor(kButtonBackgroundColor);
-  canvas->DrawRoundRect(GetLocalBounds(), 2, paint);
+  cc::PaintFlags flags;
+  flags.setStyle(cc::PaintFlags::kFill_Style);
+  flags.setColor(kButtonBackgroundColor);
+  canvas->DrawRoundRect(GetLocalBounds(), 2, flags);
   views::View::OnPaint(canvas);
 }
 
 gfx::Size ToastOverlayView::GetMinimumSize() const {
   return gfx::Size(kToastMinimumWidth, 0);
 }
 
 gfx::Size ToastOverlayView::GetMaximumSize() const {
   gfx::Rect work_area_bounds = GetUserWorkAreaBounds();
   return gfx::Size(kToastMaximumWidth, work_area_bounds.height() - kOffset * 2);
@@ skipping 102 matching lines @@
 ToastOverlayButton* ToastOverlay::dismiss_button_for_testing() {
   return overlay_view_->button();
 }
 
 void ToastOverlay::ClickDismissButtonForTesting(const ui::Event& event) {
   DCHECK(overlay_view_->button());
   overlay_view_->button()->NotifyClick(event);
 }
 
 }  // namespace ash