Index: base/metrics/persistent_histogram_allocator.h |
diff --git a/base/metrics/persistent_histogram_allocator.h b/base/metrics/persistent_histogram_allocator.h |
index 1ced35f3392c78fc82632dd5872cbb30e844daa2..4c36e35c2f42c2e059222d801ca4bf6e71782744 100644 |
--- a/base/metrics/persistent_histogram_allocator.h |
+++ b/base/metrics/persistent_histogram_allocator.h |
@@ -19,6 +19,7 @@ |
namespace base { |
+class BucketRanges; |
class FilePath; |
class PersistentSampleMapRecords; |
class PersistentSparseHistogramDataManager; |