skia: Add support for CHROMIUM_image backed textures.

src/image/SkSurface_Gpu.cpp

Index: src/image/SkSurface_Gpu.cpp
diff --git a/src/image/SkSurface_Gpu.cpp b/src/image/SkSurface_Gpu.cpp
index 2d5645b2b016d734b2c170881b8e7b276182d6ba..97060b8a1e4173b5a8763ea49199df257461c8f1 100644
--- a/src/image/SkSurface_Gpu.cpp
+++ b/src/image/SkSurface_Gpu.cpp
@@ -121,9 +121,11 @@ SkSurface* SkSurface::NewRenderTargetDirect(GrRenderTarget* target, const SkSurf
 }
 
 SkSurface* SkSurface::NewRenderTarget(GrContext* ctx, Budgeted budgeted, const SkImageInfo& info,
-                                      int sampleCount, const SkSurfaceProps* props) {
-    SkAutoTUnref<SkGpuDevice> device(SkGpuDevice::Create(ctx, budgeted, info, sampleCount, props,
-                                                         SkGpuDevice::kClear_InitContents));
+                                      int sampleCount, const SkSurfaceProps* props,
+                                      void* customAllocator) {
+    SkAutoTUnref<SkGpuDevice> device(SkGpuDevice::Create(
+            ctx, budgeted, info, sampleCount, props, SkGpuDevice::kClear_InitContents,
+            static_cast<TextureStorageAllocator*>(customAllocator)));
     if (!device) {
         return nullptr;
     }