ui: Prefer +/- operators to apply offsets.

ui/gfx/render_text.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/gfx/render_text.h"
 
 #include <algorithm>
 
 #include "base/i18n/break_iterator.h"
 #include "base/logging.h"
@@ skipping 984 matching lines @@
     // width increases.
     const int negate_rtl = horizontal_alignment_ == ALIGN_RIGHT ? -1 : 1;
     const int offset = negate_rtl * display_offset_.x();
     if (display_width > (content_width + offset)) {
       delta_x = negate_rtl * (display_width - (content_width + offset));
     }
   }
 
   gfx::Vector2d delta_offset(delta_x, 0);
   display_offset_ += delta_offset;
-  cursor_bounds_.Offset(delta_offset);
+  cursor_bounds_ += delta_offset;
 }
 
 void RenderText::DrawSelection(Canvas* canvas) {
   const SkColor color = focused() ? selection_background_focused_color_ :
                                     selection_background_unfocused_color_;
   const std::vector<Rect> sel = GetSubstringBounds(selection());
   for (std::vector<Rect>::const_iterator i = sel.begin(); i < sel.end(); ++i)
     canvas->FillRect(*i, color);
 }
 
 void RenderText::DrawCursor(Canvas* canvas) {
   // Paint cursor. Replace cursor is drawn as rectangle for now.
   // TODO(msw): Draw a better cursor with a better indication of association.
   if (cursor_enabled() && cursor_visible() && focused()) {
     const Rect& bounds = GetUpdatedCursorBounds();
     if (bounds.width() != 0)
       canvas->FillRect(bounds, cursor_color_);
     else
       canvas->DrawRect(bounds, cursor_color_);
   }
 }
 
 }  // namespace gfx