Unit Tests: eliminate stray SkDebugf()s.

GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1733113002

Review URL: https://codereview.chromium.org/1733113002
diff --git a/tests/MemsetTest.cpp b/tests/MemsetTest.cpp
index 76412ee..854b3c5 100644
--- a/tests/MemsetTest.cpp
+++ b/tests/MemsetTest.cpp
@@ -95,24 +95,24 @@
 #define VALUE16         0x1234
 #define VALUE32         0x12345678
 
-static bool compare16(const uint16_t base[], uint16_t value, int count) {
+static void compare16(skiatest::Reporter* r, const uint16_t base[],
+                      uint16_t value, int count) {
     for (int i = 0; i < count; ++i) {
         if (base[i] != value) {
-            SkDebugf("[%d] expected %x found %x\n", i, value, base[i]);
-            return false;
+            ERRORF(r, "[%d] expected %x found %x\n", i, value, base[i]);
+            return;
         }
     }
-    return true;
 }
 
-static bool compare32(const uint32_t base[], uint32_t value, int count) {
+static void compare32(skiatest::Reporter* r, const uint32_t base[],
+                      uint32_t value, int count) {
     for (int i = 0; i < count; ++i) {
         if (base[i] != value) {
-            SkDebugf("[%d] expected %x found %x\n", i, value, base[i]);
-            return false;
+            ERRORF(r, "[%d] expected %x found %x\n", i, value, base[i]);
+            return;
         }
     }
-    return true;
 }
 
 static void test_16(skiatest::Reporter* reporter) {
@@ -125,10 +125,9 @@
             uint16_t* base = &buffer[PAD + alignment];
             sk_memset16(base, VALUE16, count);
 
-            REPORTER_ASSERT(reporter,
-                compare16(buffer,       0,       PAD + alignment) &&
-                compare16(base,         VALUE16, count) &&
-                compare16(base + count, 0,       TOTAL - count - PAD - alignment));
+            compare16(reporter, buffer,       0,       PAD + alignment);
+            compare16(reporter, base,         VALUE16, count);
+            compare16(reporter, base + count, 0,       TOTAL - count - PAD - alignment);
         }
     }
 }
@@ -143,10 +142,9 @@
             uint32_t* base = &buffer[PAD + alignment];
             sk_memset32(base, VALUE32, count);
 
-            REPORTER_ASSERT(reporter,
-                compare32(buffer,       0,       PAD + alignment) &&
-                compare32(base,         VALUE32, count) &&
-                compare32(base + count, 0,       TOTAL - count - PAD - alignment));
+            compare32(reporter, buffer,       0,       PAD + alignment);
+            compare32(reporter, base,         VALUE32, count);
+            compare32(reporter, base + count, 0,       TOTAL - count - PAD - alignment);
         }
     }
 }