Rearrange SkRecord public API to fit better with cc/resources/picture

src/record/SkRecorder.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 "SkRecorder.h"
 #include "SkPicture.h"
 
 // SkCanvas will fail in mysterious ways if it doesn't know the real width and height.
 SkRecorder::SkRecorder(SkRecorder::Mode mode, SkRecord* record, int width, int height)
     : SkCanvas(width, height), fMode(mode), fRecord(record) {}
 
+void SkRecorder::forgetRecord() {
+    fRecord = NULL;
+}
+
 // To make appending to fRecord a little less verbose.
 #define APPEND(T, ...) \
         SkNEW_PLACEMENT_ARGS(fRecord->append<SkRecords::T>(), SkRecords::T, (__VA_ARGS__))
 
 // For methods which must call back into SkCanvas in kReadWrite_Mode.
 #define INHERITED(method, ...) if (fMode == kReadWrite_Mode) this->SkCanvas::method(__VA_ARGS__)
 
 // The structs we're creating all copy their constructor arguments.  Given the way the SkRecords
 // framework works, sometimes they happen to technically be copied twice, which is fine and elided
 // into a single copy unless the class has a non-trivial copy constructor.  For classes with
@@ skipping 217 matching lines @@
 
 void SkRecorder::onClipPath(const SkPath& path, SkRegion::Op op, ClipEdgeStyle edgeStyle) {
     APPEND(ClipPath, delay_copy(path), op, edgeStyle == kSoft_ClipEdgeStyle);
     INHERITED(updateClipConservativelyUsingBounds, path.getBounds(), op, path.isInverseFillType());
 }
 
 void SkRecorder::onClipRegion(const SkRegion& deviceRgn, SkRegion::Op op) {
     APPEND(ClipRegion, delay_copy(deviceRgn), op);
     INHERITED(onClipRegion, deviceRgn, op);
 }