Provide a ReadSymbolData API for Mac dump_syms

R=mark at https://breakpad.appspot.com/522002/

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1128 4c0a9323-5329-0410-9bdc-e9ce6186880e

src/common/mac/dump_syms.h

@@ -116,6 +116,11 @@ class DumpSymbols {
   // return false.
   bool WriteSymbolFile(std::ostream &stream);
 
+  // As above, but simply return the debugging information in module
+  // instead of writing it to a stream. The caller owns the resulting
+  // module object and must delete it when finished.
+  bool ReadSymbolData(Module** module);
+
  private:
   // Used internally.
   class DumperLineToModule;