base: Remove unneeded RegisterNatives() calls on Android

base/test/test_file_util.h

Index: base/test/test_file_util.h
diff --git a/base/test/test_file_util.h b/base/test/test_file_util.h
index f5140754ed013034efab372e73fc7dda8e178727..ac143555ea045a4e9987064dd1d998fcc1f6cd53 100644
--- a/base/test/test_file_util.h
+++ b/base/test/test_file_util.h
@@ -81,9 +81,6 @@ class FilePermissionRestorer {
 };
 
 #if defined(OS_ANDROID)
-// Register the ContentUriTestUrils JNI bindings.
-bool RegisterContentUriTestUtils(JNIEnv* env);
-
 // Insert an image file into the MediaStore, and retrieve the content URI for
 // testing purpose.
 FilePath InsertImageIntoMediaStore(const FilePath& path);