Reduce internal explicit SaveFlags usage.

tests/ImageFilterTest.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBicubicImageFilter.h"
 #include "SkBitmap.h"
 #include "SkBitmapDevice.h"
@@ skipping 267 matching lines @@
     SkMatrix expectedMatrix = canvas.getTotalMatrix();
 
     SkAutoTUnref<SkPictureFactory> factory(SkNEW(SkRTreePictureFactory));
     SkPictureRecorder recorder(factory);
     SkCanvas* recordingCanvas = recorder.beginRecording(100, 100);
 
     SkPaint paint;
     SkAutoTUnref<MatrixTestImageFilter> imageFilter(
         new MatrixTestImageFilter(reporter, expectedMatrix));
     paint.setImageFilter(imageFilter.get());
-    SkCanvas::SaveFlags saveFlags = static_cast<SkCanvas::SaveFlags>(
-        SkCanvas::kHasAlphaLayer_SaveFlag | SkCanvas::kFullColorLayer_SaveFlag);
-    recordingCanvas->saveLayer(NULL, &paint, saveFlags);
+    recordingCanvas->saveLayer(NULL, &paint);
     SkPaint solidPaint;
     solidPaint.setColor(0xFFFFFFFF);
     recordingCanvas->save();
     recordingCanvas->scale(SkIntToScalar(10), SkIntToScalar(10));
     recordingCanvas->drawRect(SkRect::Make(SkIRect::MakeWH(100, 100)), solidPaint);
     recordingCanvas->restore(); // scale
     recordingCanvas->restore(); // saveLayer
     SkAutoTUnref<SkPicture> picture(recorder.endRecording());
 
     canvas.drawPicture(*picture);
@@ skipping 143 matching lines @@
 }
 
 DEF_GPUTEST(XfermodeImageFilterCroppedInputGPU, reporter, factory) {
     GrContext* context = factory->get(static_cast<GrContextFactory::GLContextType>(0));
     SkAutoTUnref<SkGpuDevice> device(SkGpuDevice::Create(context,
                                                          SkImageInfo::MakeN32Premul(1, 1),
                                                          0));
     test_xfermode_cropped_input(device, reporter);
 }
 #endif