Rejigger ThemeService: move exposure of ThemeProvider interface to a

chrome/browser/themes/theme_service_mac.mm

 // 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 "chrome/browser/themes/theme_service.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/logging.h"
 #include "chrome/browser/themes/browser_theme_pack.h"
@@ skipping 268 matching lines @@
   }
   nscolor_cache_.clear();
 
   // Free gradients.
   for (NSGradientMap::iterator i = nsgradient_cache_.begin();
        i != nsgradient_cache_.end(); i++) {
     [i->second release];
   }
   nsgradient_cache_.clear();
 }
+
+bool ThemeService::BrowserThemeProvider::UsingSystemTheme() const {
+  return theme_service_->UsingSystemTheme();
+}
+
+NSImage* ThemeService::BrowserThemeProvider::GetNSImageNamed(int id) const {
+  return theme_service_->GetNSImageNamed(id);
+}
+
+NSColor* ThemeService::BrowserThemeProvider::GetNSImageColorNamed(
+    int id) const {
+  return theme_service_->GetNSImageColorNamed(id);
+}
+
+NSColor* ThemeService::BrowserThemeProvider::GetNSColor(int id) const {
+  return theme_service_->GetNSColor(id);
+}
+
+NSColor* ThemeService::BrowserThemeProvider::GetNSColorTint(int id) const {
+  return theme_service_->GetNSColorTint(id);
+}
+
+NSGradient* ThemeService::BrowserThemeProvider::GetNSGradient(int id) const {
+  return theme_service_->GetNSGradient(id);
+}