Export some unix-specific content symbols

content/common/child_process_sandbox_support_linux.h

Index: content/common/child_process_sandbox_support_linux.h
diff --git a/content/common/child_process_sandbox_support_linux.h b/content/common/child_process_sandbox_support_linux.h
index 4e7b4fb2e7e5cc68f9f74234fac78de013cce033..a7537c282bd11fe8d7fe705714a811a0a82dc8bf 100644
--- a/content/common/child_process_sandbox_support_linux.h
+++ b/content/common/child_process_sandbox_support_linux.h
@@ -10,6 +10,8 @@
 
 #include <string>
 
+#include "content/common/content_export.h"
+
 namespace WebKit {
 struct WebFontRenderStyle;
 }
@@ -34,14 +36,15 @@ void getRenderStyleForStrike(const char* family, int sizeAndStyle,
 // 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.
@@ -51,8 +54,8 @@ int MatchFontWithFallback(const std::string& face, bool bold,
 //   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