replace setConfig+allocPixels with alloc-or-install-pixels

BUG=skia:
R=scroggo@google.com, halcanary@google.com, reed@google.com

Author: reed@chromium.org

Review URL: https://codereview.chromium.org/164203003

git-svn-id: http://skia.googlecode.com/svn/trunk@13442 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/tests/AnnotationTest.cpp b/tests/AnnotationTest.cpp
index 3d14664..274d53e 100644
--- a/tests/AnnotationTest.cpp
+++ b/tests/AnnotationTest.cpp
@@ -26,8 +26,7 @@
 
 DEF_TEST(Annotation_NoDraw, reporter) {
     SkBitmap bm;
-    bm.setConfig(SkBitmap::kARGB_8888_Config, 10, 10);
-    bm.allocPixels();
+    bm.allocN32Pixels(10, 10);
     bm.eraseColor(SK_ColorTRANSPARENT);
 
     SkCanvas canvas(bm);