Test color correction in DM

This will allow me to test and visualize some assumptions
on parsing and applying color profiles.  Also, it should
help me find and fix bugs.

This is certainly not an optimized implementation, and, as
far as I know, it doesn't take any shortcuts to improve
performance.  We'll probably want to do both of these
once we know where it fits in the pipeline.

Right now this test is only run on an arbitrary set of ~100
images from the top 10k skps.  I'll continue to add more
"interesting" images and probably tweak the code as
necessary.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1995233003

Review-Url: https://codereview.chromium.org/1995233003
diff --git a/dm/DMSrcSink.h b/dm/DMSrcSink.h
index b0f67db..84096bf 100644
--- a/dm/DMSrcSink.h
+++ b/dm/DMSrcSink.h
@@ -204,9 +204,17 @@
     enum Mode {
         // Mimic legacy behavior and apply no color correction.
         kBaseline_Mode,
+
+        // Color correct images into a specific dst color space.  If you happen to have this
+        // monitor, you're in luck!  The unmarked outputs of this test should display
+        // correctly on this monitor in the Chrome browser.  If not, it's useful to know
+        // that this monitor has a profile that is fairly similar to Adobe RGB.
+        // TODO (msarett): Should we add a new test with a new monitor and verify that outputs
+        //                 look identical on two different dsts?
+        kDst_HPZR30w_Mode,
     };
 
-    ColorCodecSrc(Path, Mode);
+    ColorCodecSrc(Path, Mode, sk_sp<SkColorSpace>);
 
     Error draw(SkCanvas*) const override;
     SkISize size() const override;
@@ -215,6 +223,7 @@
 private:
     Path                    fPath;
     Mode                    fMode;
+    sk_sp<SkColorSpace>     fDstSpace;
 };
 
 class SKPSrc : public Src {