Allow ConvertJavaStringTo* to be called with (JNIEnv, JavaRef).

base/android/jni_string.cc

Index: base/android/jni_string.cc
diff --git a/base/android/jni_string.cc b/base/android/jni_string.cc
index 121755ab75e46cfe6017cdae28f3870056498525..0bc36597d75c34adf2b1fa5fdff55aa329329fe3 100644
--- a/base/android/jni_string.cc
+++ b/base/android/jni_string.cc
@@ -55,6 +55,10 @@ std::string ConvertJavaStringToUTF8(const JavaRef<jstring>& str) {
   return ConvertJavaStringToUTF8(AttachCurrentThread(), str.obj());
 }
 
+std::string ConvertJavaStringToUTF8(JNIEnv* env, const JavaRef<jstring>& str) {
+  return ConvertJavaStringToUTF8(env, str.obj());
+}
+
 ScopedJavaLocalRef<jstring> ConvertUTF8ToJavaString(
     JNIEnv* env,
     const base::StringPiece& str) {
@@ -100,6 +104,10 @@ string16 ConvertJavaStringToUTF16(const JavaRef<jstring>& str) {
   return ConvertJavaStringToUTF16(AttachCurrentThread(), str.obj());
 }
 
+string16 ConvertJavaStringToUTF16(JNIEnv* env, const JavaRef<jstring>& str) {
+  return ConvertJavaStringToUTF16(env, str.obj());
+}
+
 ScopedJavaLocalRef<jstring> ConvertUTF16ToJavaString(
     JNIEnv* env,
     const base::StringPiece16& str) {