Be consistent about "kilo" versus "kibi".

I'm a binary man myself, but we've mostly used decimal so far, and wider
Android is mostly decimal, so...

Change-Id: Ibef78f61176569e0023a7f43196a3969c7fe794b
diff --git a/src/utils_test.cc b/src/utils_test.cc
index 3c93e4d..e0b2139 100644
--- a/src/utils_test.cc
+++ b/src/utils_test.cc
@@ -138,9 +138,9 @@
   EXPECT_EQ("1MB", PrettySize(1 * MB));
   EXPECT_EQ("10MB", PrettySize(10 * MB));
   EXPECT_EQ("100MB", PrettySize(100 * MB));
-  EXPECT_EQ("1KiB", PrettySize(1 * KB));
-  EXPECT_EQ("10KiB", PrettySize(10 * KB));
-  EXPECT_EQ("100KiB", PrettySize(100 * KB));
+  EXPECT_EQ("1KB", PrettySize(1 * KB));
+  EXPECT_EQ("10KB", PrettySize(10 * KB));
+  EXPECT_EQ("100KB", PrettySize(100 * KB));
   EXPECT_EQ("1B", PrettySize(1));
   EXPECT_EQ("10B", PrettySize(10));
   EXPECT_EQ("100B", PrettySize(100));