Make UMA_HISTOGRAM_ENUMERATION work with scoped enums.

chrome/browser/extensions/installed_loader.cc

Index: chrome/browser/extensions/installed_loader.cc
diff --git a/chrome/browser/extensions/installed_loader.cc b/chrome/browser/extensions/installed_loader.cc
index 4f3cf1bec413ebf5f774f03334147a1a082f12cc..f1a0ddf8b38d27da3dd9f0822f388183531bdc72 100644
--- a/chrome/browser/extensions/installed_loader.cc
+++ b/chrome/browser/extensions/installed_loader.cc
@@ -134,8 +134,8 @@ void RecordCreationFlags(const Extension* extension) {
   for (int i = 0; i < Extension::kInitFromValueFlagBits; ++i) {
     int flag = 1 << i;
     if (extension->creation_flags() & flag) {
-      UMA_HISTOGRAM_ENUMERATION(
-          "Extensions.LoadCreationFlags", i, Extension::kInitFromValueFlagBits);
+      UMA_HISTOGRAM_EXACT_LINEAR("Extensions.LoadCreationFlags", i,
+                                 Extension::kInitFromValueFlagBits);
     }
   }
 }