Remove use of unsupported Skia flag

cc/raster/gpu_raster_buffer_provider.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 "cc/raster/gpu_raster_buffer_provider.h"
 
 #include <stdint.h>
 
 #include <algorithm>
 
@@ skipping 41 matching lines @@
         static_cast<float>(playback_rect.size().GetArea()) / full_rect_size;
     float fraction_saved = 1.0f - fraction_partial_rastered;
     UMA_HISTOGRAM_PERCENTAGE(
         base::StringPrintf("Renderer4.%s.PartialRasterPercentageSaved.Gpu",
                            client_name),
         100.0f * fraction_saved);
   }
 
   // Play back raster_source into temp SkPicture.
   SkPictureRecorder recorder;
-  const int flags = SkPictureRecorder::kComputeSaveLayerInfo_RecordFlag;
-  sk_sp<SkCanvas> canvas = sk_ref_sp(recorder.beginRecording(
-      resource_size.width(), resource_size.height(), NULL, flags));
+  sk_sp<SkCanvas> canvas = sk_ref_sp(
+      recorder.beginRecording(resource_size.width(), resource_size.height()));
   canvas->save();
   raster_source->PlaybackToCanvas(canvas.get(), raster_full_rect, playback_rect,
                                   scale, playback_settings);
   canvas->restore();
   return recorder.finishRecordingAsPicture();
 }
 
 static void RasterizePicture(SkPicture* picture,
                              ContextProvider* context_provider,
                              ResourceProvider::ScopedWriteLockGL* resource_lock,
@@ skipping 169 matching lines @@
   gl->OrderingBarrierCHROMIUM();
 
   // Generate sync token after the barrier for cross context synchronization.
   gpu::SyncToken resource_sync_token;
   gl->GenUnverifiedSyncTokenCHROMIUM(fence_sync, resource_sync_token.GetData());
   resource_lock->set_sync_token(resource_sync_token);
   resource_lock->set_synchronized(!async_worker_context_enabled_);
 }
 
 }  // namespace cc