Refactor the PlatformContext layer to have only one class.

chrome/browser/printing/printed_document.cc

 // Copyright (c) 2006-2008 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/printing/printed_document.h"
 
 #include <set>
 
 #include "app/gfx/font.h"
 #include "app/gfx/text_elider.h"
@@ skipping 85 matching lines @@
     // Make sure the page is from our list.
     AutoLock lock(lock_);
     DCHECK(&page == mutable_.pages_.find(page.page_number() - 1)->second.get());
   }
 #endif
 
   // Save the state to make sure the context this function call does not modify
   // the device context.
   int saved_state = SaveDC(context);
   DCHECK_NE(saved_state, 0);
-  skia::PlatformDeviceWin::InitializeDC(context);
+  skia::PlatformDevice::InitializeDC(context);
   {
     // Save the state (again) to apply the necessary world transformation.
     int saved_state = SaveDC(context);
     DCHECK_NE(saved_state, 0);
 
     // Setup the matrix to translate and scale to the right place. Take in
     // account the actual shrinking factor.
     XFORM xform = { 0 };
     xform.eDx = static_cast<float>(
         immutable_.settings_.page_setup_pixels().content_area().x());
@@ skipping 254 matching lines @@
   date_ = win_util::FormatSystemDate(systemtime, std::wstring());
   time_ = win_util::FormatSystemTime(systemtime, std::wstring());
 #else
   Time now = Time::Now();
   date_ = TimeFormat::ShortDateNumeric(now);
   time_ = TimeFormat::TimeOfDay(now);
 #endif  // WIN32
 }
 
 }  // namespace printing