[Cleanup] Rename UMA_HISTOGRAM_SPARSE_SLOWLY to base::UmaHistogramSparse().

This CL only covers //components.  Will migrate the other uses in sibling CLs.

[email protected]

Bug: 773850
Change-Id: Ia57dc5c75b5d2ab57436be3264b20c9d2b9b4342
Reviewed-on: https://chromium-review.googlesource.com/818726
Commit-Queue: Ilya Sherman <[email protected]>
Reviewed-by: Colin Blundell <[email protected]>
Cr-Commit-Position: refs/heads/master@{#523321}
diff --git a/components/domain_reliability/uploader.cc b/components/domain_reliability/uploader.cc
index a4cc7de4..1bda01b 100644
--- a/components/domain_reliability/uploader.cc
+++ b/components/domain_reliability/uploader.cc
@@ -10,7 +10,7 @@
 #include "base/callback.h"
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
-#include "base/metrics/histogram_macros.h"
+#include "base/metrics/histogram_functions.h"
 #include "base/supports_user_data.h"
 #include "components/domain_reliability/util.h"
 #include "net/base/load_flags.h"
@@ -173,10 +173,9 @@
             << ", response code " << http_response_code
             << ", retry after " << retry_after;
 
-    UMA_HISTOGRAM_SPARSE_SLOWLY("DomainReliability.UploadResponseCode",
-                                http_response_code);
-    UMA_HISTOGRAM_SPARSE_SLOWLY("DomainReliability.UploadNetError",
-                                -net_error);
+    base::UmaHistogramSparse("DomainReliability.UploadResponseCode",
+                             http_response_code);
+    base::UmaHistogramSparse("DomainReliability.UploadNetError", -net_error);
 
     UploadResult result;
     GetUploadResultFromResponseDetails(net_error,