Add deferred texture upload API.

src/image/SkImage.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmap.h"
 #include "SkBitmapCache.h"
 #include "SkCanvas.h"
@@ skipping 326 matching lines @@
 
 bool SkImage::isLazyGenerated() const {
     return as_IB(this)->onIsLazyGenerated();
 }
 
 //////////////////////////////////////////////////////////////////////////////////////
 
 #if !SK_SUPPORT_GPU
 
 SkImage* SkImage::NewTextureFromPixmap(GrContext*, const SkPixmap&, SkBudgeted budgeted) {
+    return nullptr
+}
+
+size_t SkImage::getDeferredTextureImageData(const GrContextThreadSafeProxy&,
+                                            const DeferredTextureImageUsageParams[],
+                                            int paramCnt, void* buffer) const {
+    return 0;
+}
+
+SkImage* SkImage::NewFromDeferredTextureImageData(GrContext* context, const void*, SkBudgeted) {
     return nullptr;
 }
 
 SkImage* SkImage::NewFromTexture(GrContext*, const GrBackendTextureDesc&, SkAlphaType,
                                  TextureReleaseProc, ReleaseContext) {
     return nullptr;
 }
 
 SkImage* SkImage::NewFromAdoptedTexture(GrContext*, const GrBackendTextureDesc&, SkAlphaType) {
     return nullptr;
 }
 
 SkImage* SkImage::NewFromTextureCopy(GrContext*, const GrBackendTextureDesc&, SkAlphaType) {
     return nullptr;
 }
 
 SkImage* SkImage::newTextureImage(GrContext*) const {
     return nullptr;
 }
 
 #endif