unsigned -> int for counts and indices in picture-related code

tests/RecordPatternTest.cpp

Index: tests/RecordPatternTest.cpp
diff --git a/tests/RecordPatternTest.cpp b/tests/RecordPatternTest.cpp
index ae13b28fc4165a81ddb64b6d425fae05da6c5afc..b88165d6f3d50bc93f33081aa69b75c1132b32cb 100644
--- a/tests/RecordPatternTest.cpp
+++ b/tests/RecordPatternTest.cpp
@@ -1,3 +1,10 @@
+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
 #include "Test.h"
 
 #include "SkRecord.h"
@@ -47,7 +54,7 @@ DEF_TEST(RecordPattern_StartingIndex, r) {
     }
 
     // We should match only at 0 and 3.  Going over the length should fail gracefully.
-    for (unsigned i = 0; i < 8; i++) {
+    for (int i = 0; i < 8; i++) {
         if (i == 0 || i == 3) {
             REPORTER_ASSERT(r, pattern.match(&record, i) == i + 3);
         } else {
@@ -99,7 +106,7 @@ DEF_TEST(RecordPattern_Complex, r) {
 
     SkRecord record;
     SkRecorder recorder(&record, 1920, 1200);
-    unsigned start, begin, end;
+    int start, begin, end;
 
     start = record.count();
     recorder.save();