Export some unix-specific content symbols

content/common/child_process_sandbox_support_linux.h

 // Copyright (c) 2011 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 CONTENT_COMMON_CHILD_PROCESS_SANDBOX_SUPPORT_LINUX_H_
 #define CONTENT_COMMON_CHILD_PROCESS_SANDBOX_SUPPORT_LINUX_H_
 #pragma once
 
 #include <stdint.h>
 
 #include <string>
 
+#include "content/common/content_export.h"
+
 namespace WebKit {
 struct WebFontRenderStyle;
 }
 
 namespace child_process_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,
                                        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);
+CONTENT_EXPORT int MakeSharedMemorySegmentViaIPC(size_t length,
+                                                 bool executable);
 
 // Return a read-only file descriptor to the font which best matches the given
 // properties or -1 on failure.
 //   charset: specifies the language(s) that the font must cover. See
 // render_sandbox_host_linux.cc for more information.
-int MatchFontWithFallback(const std::string& face, bool bold,
-                          bool italic, int charset);
+CONTENT_EXPORT int MatchFontWithFallback(const std::string& face, bool bold,
+                                         bool italic, int charset);
 
 // GetFontTable loads a specified font table from an open SFNT file.
 //   fd: a file descriptor to the SFNT file. The position doesn't matter.
 //   table: the table in *big-endian* format, or 0 for the whole font file.
 //   output: a buffer of size output_length that gets the data.  can be 0, in
 //     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);
+CONTENT_EXPORT bool GetFontTable(int fd, uint32_t table, uint8_t* output,
+                                 size_t* output_length);
 
 };  // namespace child_process_sandbox_support
 
 #endif  // CONTENT_COMMON_CHILD_PROCESS_SANDBOX_SUPPORT_LINUX_H_