ART: Move to libbase StringPrintf

Remove ART's StringPrintf implementation. Fix up clients. Add
missing includes where necessary.

Test: m test-art-host
Change-Id: I564038d5868595ac3bb88d641af1000cea940e5a
diff --git a/runtime/mirror/class.cc b/runtime/mirror/class.cc
index a862c97..c1565df 100644
--- a/runtime/mirror/class.cc
+++ b/runtime/mirror/class.cc
@@ -16,6 +16,8 @@
 
 #include "class.h"
 
+#include "android-base/stringprintf.h"
+
 #include "art_field-inl.h"
 #include "art_method-inl.h"
 #include "class_ext.h"
@@ -40,6 +42,8 @@
 namespace art {
 namespace mirror {
 
+using android::base::StringPrintf;
+
 GcRoot<Class> Class::java_lang_Class_;
 
 void Class::SetClassClass(ObjPtr<Class> java_lang_Class) {