Move stringpiece.h and stringprintf.h to base/.

Change-Id: I7f71b4a12f99c5f81771146c66629ae5a947b229
diff --git a/src/compiler_llvm/ir_builder.cc b/src/compiler_llvm/ir_builder.cc
index e8e73e3..51a8170 100644
--- a/src/compiler_llvm/ir_builder.cc
+++ b/src/compiler_llvm/ir_builder.cc
@@ -15,7 +15,8 @@
  */
 
 #include "ir_builder.h"
-#include "stringprintf.h"
+
+#include "base/stringprintf.h"
 
 #include <llvm/Module.h>
 
diff --git a/src/compiler_llvm/method_compiler.cc b/src/compiler_llvm/method_compiler.cc
index 52fb02c..ccec7e9 100644
--- a/src/compiler_llvm/method_compiler.cc
+++ b/src/compiler_llvm/method_compiler.cc
@@ -19,6 +19,7 @@
 #include "backend_types.h"
 #include "base/logging.h"
 #include "base/stl_util.h"
+#include "base/stringprintf.h"
 #include "compilation_unit.h"
 #include "compiler.h"
 #include "dalvik_reg.h"
@@ -29,7 +30,6 @@
 #include "object_utils.h"
 #include "runtime_support_func.h"
 #include "runtime_support_llvm.h"
-#include "stringprintf.h"
 #include "utils_llvm.h"
 #include "verifier/method_verifier.h"
 
diff --git a/src/compiler_llvm/runtime_support_builder_x86.cc b/src/compiler_llvm/runtime_support_builder_x86.cc
index cf38594..0eb38af 100644
--- a/src/compiler_llvm/runtime_support_builder_x86.cc
+++ b/src/compiler_llvm/runtime_support_builder_x86.cc
@@ -16,8 +16,8 @@
 
 #include "runtime_support_builder_x86.h"
 
+#include "base/stringprintf.h"
 #include "ir_builder.h"
-#include "stringprintf.h"
 #include "thread.h"
 #include "utils_llvm.h"
 
diff --git a/src/compiler_llvm/utils_llvm.h b/src/compiler_llvm/utils_llvm.h
index 5ad68d0..cec21dc 100644
--- a/src/compiler_llvm/utils_llvm.h
+++ b/src/compiler_llvm/utils_llvm.h
@@ -17,7 +17,7 @@
 #ifndef ART_SRC_UTILS_LLVM_H_
 #define ART_SRC_UTILS_LLVM_H_
 
-#include "stringprintf.h"
+#include "base/stringprintf.h"
 
 #include <llvm/Analysis/Verifier.h>