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

include/private/SkRecords.h

Index: include/private/SkRecords.h
diff --git a/include/private/SkRecords.h b/include/private/SkRecords.h
index d6ef12fe6c36491229f83253d921f8f914a52ffc..5f8c3e920836efd646351e9f83c64da70b0f40ee 100644
--- a/include/private/SkRecords.h
+++ b/include/private/SkRecords.h
@@ -47,6 +47,7 @@ namespace SkRecords {
     M(Save)                                                         \
     M(SaveLayer)                                                    \
     M(SetMatrix)                                                    \
+    M(SetZ)                                                         \
     M(Concat)                                                       \
     M(ClipPath)                                                     \
     M(ClipRRect)                                                    \
@@ -79,6 +80,8 @@ namespace SkRecords {
     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) };
@@ -217,6 +220,9 @@ RECORD(SetMatrix, 0,
 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) {}
@@ -248,6 +254,7 @@ RECORD(DrawBitmap, kDraw_Tag|kHasImage_Tag,
         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;