Variety of tweaks to View API.

views/controls/scrollbar/bitmap_scroll_bar.cc

 // Copyright (c) 2011 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 "views/controls/scrollbar/bitmap_scroll_bar.h"
 
 #if defined(OS_LINUX)
 #include "views/screen.h"
 #endif
 
@@ skipping 430 matching lines @@
     thumb_->SetBounds(thumb_->x(), thumb_->y(), thumb_prefsize.width(),
                       thumb_->height());
   }
 
   // Hide the thumb if the track isn't tall enough to display even a tiny
   // thumb. The user can only use the mousewheel, scroll buttons or keyboard
   // in this scenario.
   if ((IsHorizontal() && (track_bounds.width() < thumb_prefsize.width()) ||
       (!IsHorizontal() && (track_bounds.height() < thumb_prefsize.height())))) {
     thumb_->SetVisible(false);
-  } else if (!thumb_->IsVisible()) {
+  } else if (!thumb_->visible()) {
     thumb_->SetVisible(true);
   }
 }
 
 bool BitmapScrollBar::OnMousePressed(const MouseEvent& event) {
   if (event.IsOnlyLeftMouseButton()) {
     SetThumbTrackState(CustomButton::BS_PUSHED);
     gfx::Rect thumb_bounds = thumb_->bounds();
     if (IsHorizontal()) {
       if (event.x() < thumb_bounds.x()) {
@@ skipping 265 matching lines @@
     thumb_position = thumb_position - (thumb_->GetSize() / 2);
   return (thumb_position * contents_size_) / GetTrackSize();
 }
 
 void BitmapScrollBar::SetThumbTrackState(CustomButton::ButtonState state) {
   thumb_track_state_ = state;
   SchedulePaint();
 }
 
 }  // namespace views