linux and chromeos: Turn on -Wunused-const-variable.

chrome/browser/ui/views/download/download_started_animation_views.cc

Index: chrome/browser/ui/views/download/download_started_animation_views.cc
diff --git a/chrome/browser/ui/views/download/download_started_animation_views.cc b/chrome/browser/ui/views/download/download_started_animation_views.cc
index 31d6879962dc1a632919e2a00589805ee560bcf5..82f5b587279d84213705ba73d2bc58886238ef19 100644
--- a/chrome/browser/ui/views/download/download_started_animation_views.cc
+++ b/chrome/browser/ui/views/download/download_started_animation_views.cc
@@ -21,15 +21,10 @@
 using content::WebContents;
 
 // How long to spend moving downwards and fading out after waiting.
-static const int kMoveTimeMs = 600;
+const int kMoveTimeMs = 600;
 
 // The animation framerate.
-static const int kFrameRateHz = 60;
-
-// What fraction of the frame height to move downward from the frame center.
-// Note that setting this greater than 0.5 will mean moving past the bottom of
-// the frame.
-static const double kMoveFraction = 1.0 / 3.0;
+const int kFrameRateHz = 60;
 
 namespace {