ash: Clean up naming of paint-related identifiers

ash/common/system/tray/tray_details_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/common/system/tray/tray_details_view.h"
 
 #include "ash/common/ash_view_ids.h"
 #include "ash/common/material_design/material_design_controller.h"
 #include "ash/common/system/tray/fixed_sized_scroll_view.h"
 #include "ash/common/system/tray/system_menu_button.h"
@@ skipping 198 matching lines @@
     DrawShadow(context,
                gfx::Rect(0, 0, view->width(), view->bounds().bottom()));
     return true;
   }
 
   // Draws a drop shadow below |shadowed_area|.
   void DrawShadow(const ui::PaintContext& context,
                   const gfx::Rect& shadowed_area) {
     ui::PaintRecorder recorder(context, size());
     gfx::Canvas* canvas = recorder.canvas();
-    cc::PaintFlags paint;
+    cc::PaintFlags flags;
     gfx::ShadowValues shadow;
     shadow.emplace_back(gfx::Vector2d(0, kShadowOffsetY), kShadowBlur,
                         kSeparatorColor);
-    paint.setLooper(gfx::CreateShadowDrawLooperCorrectBlur(shadow));
-    paint.setAntiAlias(true);
+    flags.setLooper(gfx::CreateShadowDrawLooperCorrectBlur(shadow));
+    flags.setAntiAlias(true);
     canvas->ClipRect(shadowed_area, SkClipOp::kDifference);
-    canvas->DrawRect(shadowed_area, paint);
+    canvas->DrawRect(shadowed_area, flags);
   }
 
   views::BoxLayout* box_layout_;
 
   // Header child views that stick to the top of visible viewport when scrolled.
   std::vector<Header> headers_;
 
   DISALLOW_COPY_AND_ASSIGN(ScrollContentsView);
 };
 
@@ skipping 306 matching lines @@
     if (index < child_count() - 1 && child_at(index + 1) != title_row_)
       scroll_border_->set_visible(true);
     else
       scroll_border_->set_visible(false);
   }
 
   views::View::OnPaintBorder(canvas);
 }
 
 }  // namespace ash