keep only one typedef for the native drawing context

printing/printing_context_android.cc

 // Copyright 2013 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 "printing/printing_context_android.h"
 
 #include <stdint.h>
 
 #include <vector>
 
@@ skipping 221 matching lines @@
 
 void PrintingContextAndroid::Cancel() {
   abort_printing_ = true;
   in_print_job_ = false;
 }
 
 void PrintingContextAndroid::ReleaseContext() {
   // Intentional No-op.
 }
 
-gfx::NativeDrawingContext PrintingContextAndroid::context() const {
+skia::NativeDrawingContext PrintingContextAndroid::context() const {
   // Intentional No-op.
   return nullptr;
 }
 
 // static
 bool PrintingContextAndroid::RegisterPrintingContext(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace printing