ash: Clean up naming of paint-related identifiers

ash/common/wm/dock/docked_window_layout_manager.cc

 // Copyright (c) 2013 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/wm/dock/docked_window_layout_manager.h"
 
 #include "ash/common/material_design/material_design_controller.h"
 #include "ash/common/shelf/shelf_background_animator.h"
 #include "ash/common/shelf/shelf_background_animator_observer.h"
 #include "ash/common/shelf/shelf_constants.h"
@@ skipping 76 matching lines @@
   }
 
   void OnNativeWidgetPaint(const ui::PaintContext& context) override {
     gfx::Rect local_window_bounds(GetWindowBoundsInScreen().size());
     ui::PaintRecorder recorder(context, local_window_bounds.size());
 
     if (!MaterialDesignController::IsShelfMaterial()) {
       const gfx::ImageSkia& shelf_background(alignment_ == DOCKED_ALIGNMENT_LEFT
                                                  ? shelf_background_left_
                                                  : shelf_background_right_);
-      cc::PaintFlags paint;
-      paint.setAlpha(asset_background_alpha_);
+      cc::PaintFlags flags;
+      flags.setAlpha(asset_background_alpha_);
       recorder.canvas()->DrawImageInt(
           shelf_background, 0, 0, shelf_background.width(),
           shelf_background.height(),
           alignment_ == DOCKED_ALIGNMENT_LEFT
               ? local_window_bounds.width() - shelf_background.width()
               : 0,
           0, shelf_background.width(), local_window_bounds.height(), false,
-          paint);
+          flags);
       recorder.canvas()->DrawImageInt(
           shelf_background,
           alignment_ == DOCKED_ALIGNMENT_LEFT ? 0
                                               : shelf_background.width() - 1,
           0, 1, shelf_background.height(),
           alignment_ == DOCKED_ALIGNMENT_LEFT ? 0 : shelf_background.width(), 0,
           local_window_bounds.width() - shelf_background.width(),
-          local_window_bounds.height(), false, paint);
+          local_window_bounds.height(), false, flags);
     }
   }
 
   // ShelfBackgroundAnimatorObserver:
   void UpdateShelfOpaqueBackground(int alpha) override {
     const float kMaxAlpha = 255.0f;
     opaque_background_.SetOpacity(alpha / kMaxAlpha);
   }
 
   void UpdateShelfAssetBackground(int alpha) override {
@@ skipping 1252 matching lines @@
     const gfx::Rect& keyboard_bounds) {
   // This bounds change will have caused a change to the Shelf which does not
   // propagate automatically to this class, so manually recalculate bounds.
   Relayout();
   UpdateDockBounds(DockedWindowLayoutManagerObserver::KEYBOARD_BOUNDS_CHANGING);
 }
 
 void DockedWindowLayoutManager::OnKeyboardClosed() {}
 
 }  // namespace ash