Minor SkColorSpaceXformer cleanup

Instead of plugging private fields from the factory, pass to ctor.

Change-Id: Iea186e394182bddb6a569de1a05f2e40d6815c80
Reviewed-on: https://skia-review.googlesource.com/21734
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Florin Malita <fmalita@chromium.org>

src/core/SkColorSpaceXformer.cpp

@@ -14,22 +14,23 @@
 #include "SkImage_Base.h"
 #include "SkImageFilter.h"
 #include "SkImagePriv.h"
-#include "SkMakeUnique.h"
 #include "SkShaderBase.h"
 
+SkColorSpaceXformer::SkColorSpaceXformer(sk_sp<SkColorSpace> dst,
+                                         std::unique_ptr<SkColorSpaceXform> fromSRGB)
+    : fDst(std::move(dst))
+    , fFromSRGB(std::move(fromSRGB)) {}
+
 SkColorSpaceXformer::~SkColorSpaceXformer() {}
 
 std::unique_ptr<SkColorSpaceXformer> SkColorSpaceXformer::Make(sk_sp<SkColorSpace> dst) {
     std::unique_ptr<SkColorSpaceXform> fromSRGB = SkColorSpaceXform_Base::New(
             SkColorSpace::MakeSRGB().get(), dst.get(), SkTransferFunctionBehavior::kIgnore);
-    if (!fromSRGB) {
-        return nullptr;
-    }
 
-    auto xformer = std::unique_ptr<SkColorSpaceXformer>(new SkColorSpaceXformer());
+    return fromSRGB
-    xformer->fDst      = std::move(dst);
+        ? std::unique_ptr<SkColorSpaceXformer>(new SkColorSpaceXformer(std::move(dst),
-    xformer->fFromSRGB = std::move(fromSRGB);
+                                                                       std::move(fromSRGB)))
-    return xformer;
+        : nullptr;
 }
 
 sk_sp<SkImage> SkColorSpaceXformer::apply(const SkImage* src) {

src/core/SkColorSpaceXformer.h

@@ -39,7 +39,7 @@ public:
     sk_sp<SkColorSpace> dst() const { return fDst; }
 
 private:
-    SkColorSpaceXformer() = default;
+    SkColorSpaceXformer(sk_sp<SkColorSpace> dst, std::unique_ptr<SkColorSpaceXform> fromSRGB);
 
     sk_sp<SkColorSpace>                fDst;
     std::unique_ptr<SkColorSpaceXform> fFromSRGB;