Pass around preferred language to font fallback selection.

chrome/renderer/renderer_sandbox_support_linux.h

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_RENDERER_RENDERER_SANDBOX_SUPPORT_LINUX_H_
 #define CHROME_RENDERER_RENDERER_SANDBOX_SUPPORT_LINUX_H_
 #pragma once
 
 #include <stdint.h>
 
 #include <string>
 
 namespace WebKit {
 struct WebFontRenderStyle;
 }
 
 namespace renderer_sandbox_support {
 
 // Return a font family which provides glyphs for the Unicode code points
 // specified by |utf16|
 //   utf16: a native-endian UTF16 string
 //   num_utf16: the number of 16-bit words in |utf16|
+//   preferred_locale: preferred locale identifier for the |utf16|
 //
 // Returns: the font family or an empty string if the request could not be
 // satisfied.
-std::string getFontFamilyForCharacters(const uint16_t* utf16, size_t num_utf16);
+std::string getFontFamilyForCharacters(const uint16_t* utf16,
+                                       size_t num_utf16,
+                                       const char* preferred_locale);
 
 void getRenderStyleForStrike(const char* family, int sizeAndStyle,
                              WebKit::WebFontRenderStyle* out);
 
 // Returns a file descriptor for a shared memory segment.
 // The second argument is ignored because SHM segments are always
 // mappable with PROT_EXEC on Linux.
 int MakeSharedMemorySegmentViaIPC(size_t length, bool executable);
 
 // Return a read-only file descriptor to the font which best matches the given
@@ skipping 10 matching lines @@
 //     which case output_length will be set to the required size in bytes.
 //   output_length: size of output, if it's not 0.
 //
 //   returns: true on success.
 bool GetFontTable(int fd, uint32_t table, uint8_t* output,
                   size_t* output_length);
 
 };  // namespace render_sandbox_support
 
 #endif  // CHROME_RENDERER_RENDERER_SANDBOX_SUPPORT_LINUX_H_