Pass around preferred language to font fallback selection.

chrome/renderer/renderer_sandbox_support_linux.cc

Index: chrome/renderer/renderer_sandbox_support_linux.cc
diff --git a/chrome/renderer/renderer_sandbox_support_linux.cc b/chrome/renderer/renderer_sandbox_support_linux.cc
index acfdbe6e65d5abb2783b616aa37d1dcd5ddf12b9..f71f52d0ee610afbc2cf0bea1f986fcef8d92744 100644
--- a/chrome/renderer/renderer_sandbox_support_linux.cc
+++ b/chrome/renderer/renderer_sandbox_support_linux.cc
@@ -23,12 +23,14 @@ static int GetSandboxFD() {
 namespace renderer_sandbox_support {
 
 std::string getFontFamilyForCharacters(const uint16_t* utf16,
-                                       size_t num_utf16) {
+                                       size_t num_utf16,
+                                       const char* preferred_locale) {
   Pickle request;
   request.WriteInt(LinuxSandbox::METHOD_GET_FONT_FAMILY_FOR_CHARS);
   request.WriteInt(num_utf16);
   for (size_t i = 0; i < num_utf16; ++i)
     request.WriteUInt32(utf16[i]);
+  request.WriteString(preferred_locale);
 
   uint8_t buf[512];
   const ssize_t n = UnixDomainSocket::SendRecvMsg(GetSandboxFD(), buf,