[microdump] Add build fingerprint and product info metadata.

src/client/linux/microdump_writer/microdump_writer.h

Index: src/client/linux/microdump_writer/microdump_writer.h
diff --git a/src/client/linux/microdump_writer/microdump_writer.h b/src/client/linux/microdump_writer/microdump_writer.h
index 3c19f3d03c928864918973c4bef5db0bee705cd6..e218558363cf3f34d89f534470b5d6f3c262da38 100644
--- a/src/client/linux/microdump_writer/microdump_writer.h
+++ b/src/client/linux/microdump_writer/microdump_writer.h
@@ -46,12 +46,18 @@ namespace google_breakpad {
 //   blob: a blob of data from the crashing process. See exception_handler.h
 //   blob_size: the length of |blob| in bytes.
 //   mappings: a list of additional mappings provided by the application.
+//   build_fingerprint: a (optional) C string which determines the OS
+//     build fingerprint (e.g., aosp/occam/mako:5.1.1/LMY47W/1234:eng/dev-keys).
+//   product_info: a (optional) C string which determines the product name and
+//     version (e.g., WebView:42.0.2311.136).
 //
 // Returns true iff successful.
 bool WriteMicrodump(pid_t crashing_process,
                     const void* blob,
                     size_t blob_size,
-                    const MappingList& mappings);
+                    const MappingList& mappings,
+                    const char* build_fingerprint,
+                    const char* product_info);
 
 }  // namespace google_breakpad