Remove SkRecorder's kWriteOnly mode.

src/record/SkRecording.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkRecording.h"
 
 #include "SkRecord.h"
 #include "SkRecordOpts.h"
 #include "SkRecordDraw.h"
 #include "SkRecorder.h"
 
 namespace EXPERIMENTAL {
 
 SkPlayback::SkPlayback(const SkRecord* record) : fRecord(record) {}
 
 SkPlayback::~SkPlayback() {}
 
 void SkPlayback::draw(SkCanvas* canvas) const {
     SkASSERT(fRecord.get() != NULL);
     SkRecordDraw(*fRecord, canvas);
 }
 
 SkRecording::SkRecording(int width, int height)
     : fRecord(SkNEW(SkRecord))
-    , fRecorder(SkNEW_ARGS(SkRecorder, (SkRecorder::kReadWrite_Mode, fRecord.get(), width, height)))
+    , fRecorder(SkNEW_ARGS(SkRecorder, (fRecord.get(), width, height)))
     {}
 
 SkPlayback* SkRecording::releasePlayback() {
     SkASSERT(fRecorder->unique());
     fRecorder->forgetRecord();
     SkRecordOptimize(fRecord.get());
     return SkNEW_ARGS(SkPlayback, (fRecord.detach()));
 }
 
 SkRecording::~SkRecording() {}
 
 SkCanvas* SkRecording::canvas() {
     return fRecord.get() ? fRecorder.get() : NULL;
 }
 
 }  // namespace EXPERIMENTAL