Update SkSpecialImage API

This adds some temporary compatibility features:
   internal_getBM & internal_fromBM - to convert back & forth from Bitmaps in the ImageFilters
   internal_getProxy - to allow the special images to interface with the current ImagerFilter system

It also adds a unique ID, opaque flag and size method.
   The unique ID and size method are needed for the image filter's caching system.
   The opaque flag is need for swapping back & forth from Bitmaps

These are all calved off of https://codereview.chromium.org/1695823002/ (Get OffsetImageFilter really working with SkSpecialImages) which actually makes use of them.

GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1705113002

Review URL: https://codereview.chromium.org/1705113002

1 files changed, 4 insertions, 2 deletions

diff --git a/tests/SpecialImageTest.cpp b/tests/SpecialImageTest.cpp
index bc770a0ddc..049453d302 100644
--- a/tests/SpecialImageTest.cpp
+++ b/tests/SpecialImageTest.cpp
@@ -110,7 +110,7 @@ DEF_TEST(SpecialImage_Raster, reporter) {
 
     const SkIRect& subset = SkIRect::MakeXYWH(kPad, kPad, kSmallerSize, kSmallerSize);
 
-    SkAutoTUnref<SkSpecialImage> img(SkSpecialImage::NewFromRaster(subset, bm));
+    SkAutoTUnref<SkSpecialImage> img(SkSpecialImage::NewFromRaster(nullptr, subset, bm));
     test_image(img, reporter, true, false);
 }
 
@@ -143,7 +143,9 @@ DEF_GPUTEST_FOR_RENDERING_CONTEXTS(SpecialImage_Gpu, reporter, context) {
 
     const SkIRect& subset = SkIRect::MakeXYWH(kPad, kPad, kSmallerSize, kSmallerSize);
 
-    SkAutoTUnref<SkSpecialImage> img(SkSpecialImage::NewFromGpu(subset, texture));
+    SkAutoTUnref<SkSpecialImage> img(SkSpecialImage::NewFromGpu(nullptr, subset, 
+                                                                kNeedNewImageUniqueID_SpecialImage,
+                                                                texture));
     test_image(img, reporter, false, true);
 }