ntp4: some appearance fixes

chrome/browser/resources/ntp4/apps_page.css

Index: chrome/browser/resources/ntp4/apps_page.css
diff --git a/chrome/browser/resources/ntp4/apps_page.css b/chrome/browser/resources/ntp4/apps_page.css
index 3dec51c9d8b5b38e13ba2bca16ffeb7dcb96e807..d486a703bc1beb3f8106175380ef26a364da2c10 100644
--- a/chrome/browser/resources/ntp4/apps_page.css
+++ b/chrome/browser/resources/ntp4/apps_page.css
@@ -9,7 +9,7 @@
   -webkit-transition: -webkit-transform 0.1s;
 }
 
-.app:active,
+.app:active:not(.right-mouse-down),
 .dragging .app,
 .drag-representation .app {
   /* Don't animate the initial scaling.  */
@@ -17,6 +17,12 @@
   -webkit-transform: scale(1.1);
 }
 
+/* Active gets applied right before .right-mouse-down, so to avoid flicker
+ * we need to make the scale go back to normal without an animation. */
+.app.right-mouse-down {
+  -webkit-transition-duration: 0;
+}
+
 .app-contents > span {
   cursor: pointer;
   display: block;