s/\bArc\b/ARC/g for ARC related code.

components/arc/arc_features.cc

Index: components/arc/arc_features.cc
diff --git a/components/arc/arc_features.cc b/components/arc/arc_features.cc
index e5db91b0710a232f4227cc7e5f0f386de1a11363..66bf95a6d7d260b02724cdee653fd37c09ad8d20 100644
--- a/components/arc/arc_features.cc
+++ b/components/arc/arc_features.cc
@@ -6,7 +6,7 @@
 
 namespace arc {
 
-// Controls if Arc should use silent auth code request API.
+// Controls if ARC should use silent auth code request API.
 const base::Feature kArcUseAuthEndpointFeature {
     "ArcUseAuthEndpoint", base::FEATURE_ENABLED_BY_DEFAULT
 };
@@ -17,7 +17,7 @@ const base::Feature kBootCompletedBroadcastFeature {
     "ArcBootCompletedBroadcast", base::FEATURE_ENABLED_BY_DEFAULT
 };
 
-// Controls whether we show Arc Files app in Chrome launcher.
+// Controls whether we show ARC Files app in Chrome launcher.
 const base::Feature kShowArcFilesAppFeature {
     "ShowArcFilesApp", base::FEATURE_DISABLED_BY_DEFAULT
 };