Volume bubble horizontally centered.

chrome/browser/chromeos/volume_bubble.cc

Index: chrome/browser/chromeos/volume_bubble.cc
diff --git a/chrome/browser/chromeos/volume_bubble.cc b/chrome/browser/chromeos/volume_bubble.cc
index 9b7543a451e86b9b1ccfedc9d5a881b767a1f766..6c71fb345e707e61095f49e7c6bb796cf8e8e949 100644
--- a/chrome/browser/chromeos/volume_bubble.cc
+++ b/chrome/browser/chromeos/volume_bubble.cc
@@ -17,7 +17,7 @@ const int kBubbleShowTimeoutSec = 2;
 const int kAnimationDurationMs = 200;
 
 // Horizontal relative position: 0 - leftmost, 0.5 - center, 1 - rightmost.
-const double kVolumeBubbleXRatio = 0.18;
+const double kVolumeBubbleXRatio = 0.5;
 
 // Vertical gap from the bottom of the screen in pixels.
 const int kVolumeBubbleBottomGap = 30;