Remove texColorSpace output param from various producer APIs

Just expose colorSpace on the GrTextureProducer, and if a client needs
it, they can get it from there.

Bug: skia:
Change-Id: I5134b1c9b2780274f3d6571d9fe8cd2a6b6ce7e9
Reviewed-on: https://skia-review.googlesource.com/c/163888
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
diff --git a/src/image/SkImage_GpuBase.cpp b/src/image/SkImage_GpuBase.cpp
index 50d07ac..006533a 100644
--- a/src/image/SkImage_GpuBase.cpp
+++ b/src/image/SkImage_GpuBase.cpp
@@ -187,7 +187,6 @@
 
 sk_sp<GrTextureProxy> SkImage_GpuBase::asTextureProxyRef(GrContext* context,
                                                          const GrSamplerState& params,
-                                                         sk_sp<SkColorSpace>* texColorSpace,
                                                          SkScalar scaleAdjust[2]) const {
     if (context->uniqueID() != fContext->uniqueID()) {
         SkASSERT(0);
@@ -196,7 +195,7 @@
 
     GrTextureAdjuster adjuster(fContext.get(), this->asTextureProxyRef(), fAlphaType,
                                this->uniqueID(), fColorSpace.get());
-    return adjuster.refTextureProxyForParams(params, texColorSpace, scaleAdjust);
+    return adjuster.refTextureProxyForParams(params, scaleAdjust);
 }
 
 GrBackendTexture SkImage_GpuBase::onGetBackendTexture(bool flushPendingGrContextIO,