Reland "SkDEBUGF: use __VA_ARGS__"

This is a reland of 2267a092356d17f6444502dc92491485ccf24341

Original change's description:
> SkDEBUGF: use __VA_ARGS__
> 
> Change-Id: I42a47e821ff7a7f6cec65b38a8216cabbf0acfce
> Reviewed-on: https://skia-review.googlesource.com/139860
> Reviewed-by: Mike Klein <mtklein@google.com>
> Commit-Queue: Hal Canary <halcanary@google.com>

Change-Id: Ia06567e441a414f4dcdbe5663160082f889f9fef
Reviewed-on: https://skia-review.googlesource.com/141762
Reviewed-by: Hal Canary <halcanary@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>

fuzz/FuzzGradients.cpp

diff --git a/fuzz/FuzzGradients.cpp b/fuzz/FuzzGradients.cpp
index 1c06af5..f9d0742 100644
--- a/fuzz/FuzzGradients.cpp
+++ b/fuzz/FuzzGradients.cpp
@@ -56,11 +56,11 @@
         return;
     }
 
-    SkDEBUGF(("  %s: [ ", label));
+    SkDEBUGF("  %s: [ ", label);
     for (int i = 0; i < 9; ++i) {
-        SkDEBUGF(("%.9g ", m->get(i)));
+        SkDEBUGF("%.9g ", m->get(i));
     }
-    SkDEBUGF(("]\n"));
+    SkDEBUGF("]\n");
 }
 
 static void logLinearGradient(const SkPoint pts[2],
@@ -256,19 +256,19 @@
 
     switch(i) {
         case 0:
-            SkDEBUGF(("LinearGradient\n"));
+            SkDEBUGF("LinearGradient\n");
             fuzzLinearGradient(fuzz);
             return;
         case 1:
-            SkDEBUGF(("RadialGradient\n"));
+            SkDEBUGF("RadialGradient\n");
             fuzzRadialGradient(fuzz);
             return;
         case 2:
-            SkDEBUGF(("TwoPointConicalGradient\n"));
+            SkDEBUGF("TwoPointConicalGradient\n");
             fuzzTwoPointConicalGradient(fuzz);
             return;
     }
-    SkDEBUGF(("SweepGradient\n"));
+    SkDEBUGF("SweepGradient\n");
     fuzzSweepGradient(fuzz);
     return;
 }