Added the framework for having canvas/recorder/picture record depth_set's.

include/private/SkRecords.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkRecords_DEFINED
 #define SkRecords_DEFINED
 
@@ skipping 29 matching lines @@
 // types polymorphically.  (See SkRecord::Record::{visit,mutate} for an example.)
 //
 // Order doesn't technically matter here, but the compiler can generally generate better code if
 // you keep them semantically grouped, especially the Draws.  It's also nice to leave NoOp at 0.
 #define SK_RECORD_TYPES(M)                                          \
     M(NoOp)                                                         \
     M(Restore)                                                      \
     M(Save)                                                         \
     M(SaveLayer)                                                    \
     M(SetMatrix)                                                    \
+    M(SetZ)                                                         \
     M(Concat)                                                       \
     M(ClipPath)                                                     \
     M(ClipRRect)                                                    \
     M(ClipRect)                                                     \
     M(ClipRegion)                                                   \
     M(DrawBitmap)                                                   \
     M(DrawBitmapNine)                                               \
     M(DrawBitmapRect)                                               \
     M(DrawBitmapRectFast)                                           \
     M(DrawBitmapRectFixedSize)                                      \
@@ skipping 12 matching lines @@
     M(DrawPosTextH)                                                 \
     M(DrawText)                                                     \
     M(DrawTextOnPath)                                               \
     M(DrawRRect)                                                    \
     M(DrawRect)                                                     \
     M(DrawTextBlob)                                                 \
     M(DrawAtlas)                                                    \
     M(DrawVertices)                                                 \
     M(DrawAnnotation)
 
+// setZ is Victor

[jvanverth1, 2016/07/07 18:43:02]

Remove this comment?

[vjiaoblack, 2016/07/07 19:04:10]

Done.

+
 // Defines SkRecords::Type, an enum of all record types.
 #define ENUM(T) T##_Type,
 enum Type { SK_RECORD_TYPES(ENUM) };
 #undef ENUM
 
 #define ACT_AS_PTR(ptr)                 \
     operator T*() const { return ptr; } \
     T* operator->() const { return ptr; }
 
 template <typename T>
@@ skipping 118 matching lines @@
        Optional<SkRect> bounds;
        Optional<SkPaint> paint;
        RefBox<const SkImageFilter> backdrop;
        SkCanvas::SaveLayerFlags saveLayerFlags);
 
 RECORD(SetMatrix, 0,
         TypedMatrix matrix);
 RECORD(Concat, 0,
         TypedMatrix matrix);
 
+//   TEST_VICTOR

[jvanverth1, 2016/07/07 18:43:02]

Remove this comment?

+RECORD(SetZ, 0, uint32_t z);
+
 struct RegionOpAndAA {
     RegionOpAndAA() {}
     RegionOpAndAA(SkRegion::Op op, bool aa) : op(op), aa(aa) {}
     SkRegion::Op op : 31;  // This really only needs to be 3, but there's no win today to do so.
     unsigned     aa :  1;  // MSVC won't pack an enum with an bool, so we call this an unsigned.
 };
 static_assert(sizeof(RegionOpAndAA) == 4, "RegionOpAndAASize");
 
 RECORD(ClipPath, 0,
         SkIRect devBounds;
@@ skipping 11 matching lines @@
         SkIRect devBounds;
         SkRegion region;
         SkRegion::Op op);
 
 // While not strictly required, if you have an SkPaint, it's fastest to put it first.
 RECORD(DrawBitmap, kDraw_Tag|kHasImage_Tag,
         Optional<SkPaint> paint;
         ImmutableBitmap bitmap;
         SkScalar left;
         SkScalar top);
+        //uint8_t zLevel);

[jvanverth1, 2016/07/07 18:43:02]

Is this needed?

 RECORD(DrawBitmapNine, kDraw_Tag|kHasImage_Tag,
         Optional<SkPaint> paint;
         ImmutableBitmap bitmap;
         SkIRect center;
         SkRect dst);
 RECORD(DrawBitmapRect, kDraw_Tag|kHasImage_Tag,
         Optional<SkPaint> paint;
         ImmutableBitmap bitmap;
         Optional<SkRect> src;
         SkRect dst);
@@ skipping 110 matching lines @@
         int indexCount);
 RECORD(DrawAnnotation, 0,
        SkRect rect;
        SkString key;
        RefBox<SkData> value);
 #undef RECORD
 
 }  // namespace SkRecords
 
 #endif//SkRecords_DEFINED