Fix build on Android - put the missing NT_GNU_BUILD_ID #define in elf_gnu_compat.h and use it where needed.

Review URL: https://breakpad.appspot.com/554004

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1146 4c0a9323-5329-0410-9bdc-e9ce6186880e

src/common/linux/file_id.cc

@@ -40,6 +40,7 @@
 
 #include <algorithm>
 
+#include "common/linux/elf_gnu_compat.h"
 #include "common/linux/elfutils.h"
 #include "common/linux/linux_libc_support.h"
 #include "common/linux/memory_mapped_file.h"
@@ -47,10 +48,6 @@
 
 namespace google_breakpad {
 
-#ifndef NT_GNU_BUILD_ID
-#define NT_GNU_BUILD_ID 3
-#endif
-
 FileID::FileID(const char* path) {
   strncpy(path_, path, sizeof(path_));
 }