Change name of NativeTheme::instance() to make it clear it's web only.

content/child/webthemeengine_impl_default.cc

 // Copyright 2014 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 "content/child/webthemeengine_impl_default.h"
 
 #include "skia/ext/platform_canvas.h"
 #include "third_party/WebKit/public/platform/WebRect.h"
 #include "third_party/WebKit/public/platform/WebSize.h"
 #include "ui/native_theme/native_theme.h"
@@ skipping 185 matching lines @@
     case ui::NativeTheme::kScrollbarHorizontalTrack:
     case ui::NativeTheme::kScrollbarVerticalTrack: {
       return gfx::Size(g_vertical_scroll_bar_width,
                        g_vertical_scroll_bar_width);
     }
 
     default:
       break;
   }
 #endif
-  return ui::NativeTheme::instance()->GetPartSize(native_theme_part,
-                                                  ui::NativeTheme::kNormal,
-                                                  extra);
+  return ui::NativeTheme::GetInstanceForWeb()->GetPartSize(
+      native_theme_part, ui::NativeTheme::kNormal, extra);
 }
 
 void WebThemeEngineImpl::paint(
     blink::WebCanvas* canvas,
     WebThemeEngine::Part part,
     WebThemeEngine::State state,
     const blink::WebRect& rect,
     const WebThemeEngine::ExtraParams* extra_params) {
   ui::NativeTheme::ExtraParams native_theme_extra_params;
   GetNativeThemeExtraParams(
       part, state, extra_params, &native_theme_extra_params);
-  ui::NativeTheme::instance()->Paint(
-      canvas,
-      NativeThemePart(part),
-      NativeThemeState(state),
-      gfx::Rect(rect),
+  ui::NativeTheme::GetInstanceForWeb()->Paint(
+      canvas, NativeThemePart(part), NativeThemeState(state), gfx::Rect(rect),
       native_theme_extra_params);
 }
 
 void WebThemeEngineImpl::paintStateTransition(blink::WebCanvas* canvas,
                                               WebThemeEngine::Part part,
                                               WebThemeEngine::State startState,
                                               WebThemeEngine::State endState,
                                               double progress,
                                               const blink::WebRect& rect) {
-  ui::NativeTheme::instance()->PaintStateTransition(
-      canvas,
-      NativeThemePart(part),
-      NativeThemeState(startState),
-      NativeThemeState(endState),
-      progress,
-      gfx::Rect(rect));
+  ui::NativeTheme::GetInstanceForWeb()->PaintStateTransition(
+      canvas, NativeThemePart(part), NativeThemeState(startState),
+      NativeThemeState(endState), progress, gfx::Rect(rect));
 }
 
 #if defined(OS_WIN)
 // static
 void WebThemeEngineImpl::cacheScrollBarMetrics(
     int32 vertical_scroll_bar_width,
     int32 horizontal_scroll_bar_height,
     int32 vertical_arrow_bitmap_height,
     int32 horizontal_arrow_bitmap_width) {
   g_vertical_scroll_bar_width = vertical_scroll_bar_width;
   g_horizontal_scroll_bar_height = horizontal_scroll_bar_height;
   g_vertical_arrow_bitmap_height = vertical_arrow_bitmap_height;
   g_horizontal_arrow_bitmap_width = horizontal_arrow_bitmap_width;
 }
 #endif
 
 }  // namespace content