Connect SparseHistogram with the rest of stats system

chrome/browser/spellchecker/spellcheck_host_metrics_unittest.cc

Index: chrome/browser/spellchecker/spellcheck_host_metrics_unittest.cc
diff --git a/chrome/browser/spellchecker/spellcheck_host_metrics_unittest.cc b/chrome/browser/spellchecker/spellcheck_host_metrics_unittest.cc
index a2b9bb3c2c2a77d2c78ea76f2d490011a5b20365..113e65d89dbf859486a5e6ebb8aec3f7032175c8 100644
--- a/chrome/browser/spellchecker/spellcheck_host_metrics_unittest.cc
+++ b/chrome/browser/spellchecker/spellcheck_host_metrics_unittest.cc
@@ -13,7 +13,7 @@
 #include "base/utf_string_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-using base::Histogram;
+using base::HistogramBase;
 using base::HistogramSamples;
 using base::StatisticsRecorder;
 
@@ -37,7 +37,7 @@ class SpellcheckHostMetricsTest : public testing::Test {
 
 TEST_F(SpellcheckHostMetricsTest, RecordEnabledStats) {
   scoped_ptr<HistogramSamples> baseline;
-  Histogram* histogram =
+  HistogramBase* histogram =
       StatisticsRecorder::FindHistogram("SpellCheck.Enabled");
   if (histogram)
     baseline = histogram->SnapshotSamples();
@@ -69,7 +69,7 @@ TEST_F(SpellcheckHostMetricsTest, RecordEnabledStats) {
 TEST_F(SpellcheckHostMetricsTest, CustomWordStats) {
   metrics()->RecordCustomWordCountStats(123);
 
-  Histogram* histogram =
+  HistogramBase* histogram =
       StatisticsRecorder::FindHistogram("SpellCheck.CustomWords");
   ASSERT_TRUE(histogram != NULL);
   scoped_ptr<HistogramSamples> baseline = histogram->SnapshotSamples();
@@ -102,7 +102,7 @@ TEST_F(SpellcheckHostMetricsTest, RecordWordCountsDiscardsDuplicates) {
   // Get baselines for all affected histograms.
   scoped_ptr<HistogramSamples> baselines[arraysize(histogramName)];
   for (size_t i = 0; i < arraysize(histogramName); ++i) {
-    Histogram* histogram =
+    HistogramBase* histogram =
         StatisticsRecorder::FindHistogram(histogramName[i]);
     if (histogram)
       baselines[i] = histogram->SnapshotSamples();
@@ -114,7 +114,7 @@ TEST_F(SpellcheckHostMetricsTest, RecordWordCountsDiscardsDuplicates) {
   // Get samples for all affected histograms.
   scoped_ptr<HistogramSamples> samples[arraysize(histogramName)];
   for (size_t i = 0; i < arraysize(histogramName); ++i) {
-    Histogram* histogram =
+    HistogramBase* histogram =
         StatisticsRecorder::FindHistogram(histogramName[i]);
     ASSERT_TRUE(histogram != NULL);
     samples[i] = histogram->SnapshotSamples();