Un-plumb dstColorSpace through GrTextureProducer

All unused.

Bug: skia:
Change-Id: I35b32874b0865ff7a33560f9a7b80df603eac6f4
Reviewed-on: https://skia-review.googlesource.com/c/163885
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
diff --git a/src/gpu/GrBitmapTextureMaker.cpp b/src/gpu/GrBitmapTextureMaker.cpp
index 19ba702..8b70e81 100644
--- a/src/gpu/GrBitmapTextureMaker.cpp
+++ b/src/gpu/GrBitmapTextureMaker.cpp
@@ -31,7 +31,6 @@
 }
 
 sk_sp<GrTextureProxy> GrBitmapTextureMaker::refOriginalTextureProxy(bool willBeMipped,
-                                                                    SkColorSpace* dstColorSpace,
                                                                     AllowedTexGenType onlyIfFast) {
     if (AllowedTexGenType::kCheap == onlyIfFast) {
         return nullptr;
@@ -114,7 +113,6 @@
     return fBitmap.alphaType();
 }
 
-sk_sp<SkColorSpace> GrBitmapTextureMaker::getColorSpace(SkColorSpace* dstColorSpace) {
-    // Color space doesn't depend on destination color space - it's just whatever is in the bitmap
+sk_sp<SkColorSpace> GrBitmapTextureMaker::getColorSpace() {
     return fBitmap.refColorSpace();
 }