Scale the favicon by the density of the screen.

Scale the favicon but keep the padding the same. It looks a little better with
the current bookmark asset.

Bug: 2162987
diff --git a/src/com/android/browser/BrowserBookmarksPage.java b/src/com/android/browser/BrowserBookmarksPage.java
index a443090..535f0db 100644
--- a/src/com/android/browser/BrowserBookmarksPage.java
+++ b/src/com/android/browser/BrowserBookmarksPage.java
@@ -440,9 +440,10 @@
                 p.setStyle(Paint.Style.FILL_AND_STROKE);
                 p.setColor(Color.WHITE);
 
+                float density = getResources().getDisplayMetrics().density;
                 // Create a rectangle that is slightly wider than the favicon
-                final float iconSize = 16; // 16x16 favicon
-                final float padding = 2;   // white padding around icon
+                final float iconSize = 16 * density; // 16x16 favicon
+                final float padding = 2; // white padding around icon
                 final float rectSize = iconSize + 2 * padding;
                 final float y = icon.getHeight() - rectSize;
                 RectF r = new RectF(0, y, rectSize, y + rectSize);