Fill out the rest of the StringPiece functions for 16-bit.

ui/base/resource/data_pack.cc

Index: ui/base/resource/data_pack.cc
diff --git a/ui/base/resource/data_pack.cc b/ui/base/resource/data_pack.cc
index 934b14b29666ba64e6ca6e56157fe16fc78ddb13..ac5ff4fa021080b9ddc0fe2503374c5e243b241d 100644
--- a/ui/base/resource/data_pack.cc
+++ b/ui/base/resource/data_pack.cc
@@ -190,7 +190,8 @@ bool DataPack::GetStringPiece(uint16 resource_id,
   const DataPackEntry* next_entry = target + 1;
   size_t length = next_entry->file_offset - target->file_offset;
 
-  data->set(mmap_->data() + target->file_offset, length);
+  data->set(reinterpret_cast<const char*>(mmap_->data() + target->file_offset),
+            length);
   return true;
 }