Fix clang/win build after https://codereview.chromium.org/1543173002/

ui/views/metrics_aura.cc

Index: ui/views/metrics_aura.cc
diff --git a/ui/views/metrics_aura.cc b/ui/views/metrics_aura.cc
index 50102ca0e54fba81f42eb8dd5a4e4d8e1fef6839..81d036ee32fe4018033a8f41de29acf7a73fd052 100644
--- a/ui/views/metrics_aura.cc
+++ b/ui/views/metrics_aura.cc
@@ -9,13 +9,6 @@
 #include <windows.h>
 #endif
 
-namespace {
-
-// Default double click interval in milliseconds.
-const int kDefaultDoubleClickInterval = 500;
-
-}  // namespace
-
 namespace views {
 
 int GetDoubleClickInterval() {
@@ -23,7 +16,8 @@ int GetDoubleClickInterval() {
   return ::GetDoubleClickTime();
 #else
   // TODO(jennyz): This value may need to be adjusted on different platforms.
-  return kDefaultDoubleClickInterval;
+  const int kDefaultDoubleClickIntervalMs = 500;

[tfarina, 2015/12/23 21:23:25]

right, on Windows, this constant was unused. Good catch of clang-cl!

lgtm

+  return kDefaultDoubleClickIntervalMs;
 #endif
 }