predictors: Version the resource_prefetch_predictor database.

chrome/browser/predictors/resource_prefetch_predictor.proto

Index: chrome/browser/predictors/resource_prefetch_predictor.proto
diff --git a/chrome/browser/predictors/resource_prefetch_predictor.proto b/chrome/browser/predictors/resource_prefetch_predictor.proto
index bc88ee60f38a0d54ddabd2d5746b22d1d1f9217b..1d63a7afeb40138869023ac9a56b6d74945da8d3 100644
--- a/chrome/browser/predictors/resource_prefetch_predictor.proto
+++ b/chrome/browser/predictors/resource_prefetch_predictor.proto
@@ -3,6 +3,8 @@
 // found in the LICENSE file.
 
 // Protocol buffers used for storing in SQLite.
+// CAUTION: When any change is done here, bump kDatabaseVersion in
+//          resource_prefetch_predictor.cc.

[pasko, 2016/08/26 15:06:44]

I like it less because in case the file name changes or the constant moves
somewhere, this will become inconsistent.

I guess the advantage is less bloat in the protobuf? Or was it just hard to
access the proto enum value in resource_prefetch_predictor.cc?

[Benoit L, 2016/08/26 16:37:02]

Acknowledged.

 
 syntax = "proto2";