Randomly select a single rappor sample when more than one is collected.

components/rappor/bloom_filter.cc

Index: components/rappor/bloom_filter.cc
diff --git a/components/rappor/bloom_filter.cc b/components/rappor/bloom_filter.cc
index d3f9e6339328714bc301237173e4f93baee96fee..45c7dc2523542b1e3f9874ce8a4f9eaa6a287182 100644
--- a/components/rappor/bloom_filter.cc
+++ b/components/rappor/bloom_filter.cc
@@ -33,4 +33,17 @@ void BloomFilter::AddString(const std::string& str) {
   }
 }
 
+void BloomFilter::Clear() {
+  for (size_t i = 0; i < bytes_.size(); ++i) {
+    bytes_[i] = 0;
+  }
+}
+
+void BloomFilter::SetBytesForTesting(const ByteVector& bytes) {
+  DCHECK_EQ(bytes.size(), bytes_.size());

[Alexei Svitkine (slow), 2014/07/30 17:12:47]

Nit: Swap params (expected size should be on the left).

[Steven Holte, 2014/08/04 23:30:26]

Done.

+  for (size_t i = 0; i < bytes_.size(); ++i) {
+    bytes_[i] = bytes[i];
+  }
+}
+
 }  // namespace rappor