RAPPOR implementation

chrome/common/metrics/proto/system_profile.proto

Index: chrome/common/metrics/proto/system_profile.proto
diff --git a/chrome/common/metrics/proto/system_profile.proto b/chrome/common/metrics/proto/system_profile.proto
index abeea2bb0f269a0cffb5d528b80a890ce25bf025..e00fb292d0e0e0962643e54b112df27005c3aae6 100644
--- a/chrome/common/metrics/proto/system_profile.proto
+++ b/chrome/common/metrics/proto/system_profile.proto
@@ -442,4 +442,6 @@ message SystemProfileProto {
   // A zero value indicates that the user count changed while the log is open.
   // Logged only on ChromeOS.
   optional uint32 multi_profile_user_count = 17;
+

[Steven Holte, 2013/10/28 21:02:44]

This probably should move somewhere else and be a repeated message containing a
name_hash.  Does moving it directly to ChromeUserMetricsExtension seem like the
right place?

[Ilya Sherman, 2013/10/29 00:32:31]

If this is meant to be a general utility for particularly privacy-sensitive
histograms in a privacy-respectful way, then yes, moving it directly to
ChromeUserMetricsExtension seems like the right place.  OTOH, if this is
intended for reporting some specific system state outside of a histogram
context, then it is probably more appropriate to keep it in this file, but to
assign the field a more descriptive name.

+  optional string bloom_filter_bits = 18;
 }