Update shelf spacing in Chrome OS according to the MD specs

chrome/browser/ui/ash/launcher/launcher_favicon_loader_browsertest.cc

Index: chrome/browser/ui/ash/launcher/launcher_favicon_loader_browsertest.cc
diff --git a/chrome/browser/ui/ash/launcher/launcher_favicon_loader_browsertest.cc b/chrome/browser/ui/ash/launcher/launcher_favicon_loader_browsertest.cc
index af75db3dfc3f3b5ce3754008fda79e059c10a299..2606e66d58e0aef729a1fc0f39a087a01c956268 100644
--- a/chrome/browser/ui/ash/launcher/launcher_favicon_loader_browsertest.cc
+++ b/chrome/browser/ui/ash/launcher/launcher_favicon_loader_browsertest.cc
@@ -158,8 +158,8 @@ IN_PROC_BROWSER_TEST_F(LauncherFaviconLoaderBrowsertest, ManyLauncherIcons) {
 
   EXPECT_FALSE(favicon_loader_->GetFavicon().empty());
   // When multiple favicons are present, the correctly sized icon should be
-  // chosen. The icons are sized assuming ash::kShelfSize < 128.
-  EXPECT_GT(128, ash::kShelfSize);
+  // chosen. The icons are sized assuming ash::SHELF_SIZE < 128.
+  EXPECT_GT(128, ash::GetShelfConstant(ash::SHELF_SIZE));
   EXPECT_EQ(48, favicon_loader_->GetFavicon().height());
 }