migrating SkTDArray towards std::vector api

fix for https://skia-review.googlesource.com/c/skia/+/146140

Change from original was to include <initializer_list>

Bug: skia:
Change-Id: Ie36426fcf7ce778a95e2b656ce80a9a394a8307c
Reviewed-on: https://skia-review.googlesource.com/146160
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Mike Reed <reed@google.com>
diff --git a/src/utils/SkBitSet.h b/src/utils/SkBitSet.h
index 98aa05f..755e63b 100644
--- a/src/utils/SkBitSet.h
+++ b/src/utils/SkBitSet.h
@@ -55,7 +55,7 @@
                 unsigned int index = i * 32;
                 for (unsigned int j = 0; j < 32; ++j) {
                     if (0x1 & (value >> j)) {
-                        array->push(index + j);
+                        array->push_back(index + j);
                     }
                 }
             }