Translate: move UMA related code in TranslateManager to TranslateManagerMetrics

chrome/renderer/translate/translate_helper_metrics.cc

Index: chrome/renderer/translate/translate_helper_metrics.cc
diff --git a/chrome/renderer/translate/translate_helper_metrics.cc b/chrome/renderer/translate/translate_helper_metrics.cc
index a014da42470cee214231bc533a468e50829b93ef..23f1b702f88b76dadb5037b23de34ed4610e92bf 100644
--- a/chrome/renderer/translate/translate_helper_metrics.cc
+++ b/chrome/renderer/translate/translate_helper_metrics.cc
@@ -4,6 +4,7 @@
 
 #include "chrome/renderer/translate/translate_helper_metrics.h"
 
+#include "base/basictypes.h"
 #include "base/metrics/histogram.h"
 
 namespace {
@@ -38,6 +39,9 @@ const MetricsEntry kMetricsEntries[] = {
     kTranslateTimeToTranslate },
 };
 
+COMPILE_ASSERT(arraysize(kMetricsEntries) == TranslateHelperMetrics::UMA_MAX,
+               arraysize_of_kMetricsEntries_should_be_UMA_MAX);
+
 }  // namespace
 
 namespace TranslateHelperMetrics {