Pin color type when a cross-context image is constructed

Fixes issues with gray images that may be incorrectly re-interpreted as
alpha when re-wrapped. (https://github.com/flutter/flutter/issues/15600)

Change-Id: I4a78466073e14d212108d168eed0b2df1bc92ffe
Reviewed-on: https://skia-review.googlesource.com/116484
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/src/gpu/GrBackendTextureImageGenerator.h b/src/gpu/GrBackendTextureImageGenerator.h
index 59f0d510da..5197d32273 100644
--- a/src/gpu/GrBackendTextureImageGenerator.h
+++ b/src/gpu/GrBackendTextureImageGenerator.h
@@ -29,7 +29,7 @@ class GrSemaphore;
 class GrBackendTextureImageGenerator : public SkImageGenerator {
 public:
     static std::unique_ptr<SkImageGenerator> Make(sk_sp<GrTexture>, GrSurfaceOrigin,
-                                                  sk_sp<GrSemaphore>,
+                                                  sk_sp<GrSemaphore>, SkColorType,
                                                   SkAlphaType, sk_sp<SkColorSpace>);
 
     ~GrBackendTextureImageGenerator() override;