Supporting high dpi favicons in Instant Extended.

ui/gfx/favicon_size.h

Index: ui/gfx/favicon_size.h
diff --git a/ui/gfx/favicon_size.h b/ui/gfx/favicon_size.h
index 6b2c6a14f4f9fd85f9c5b99d8efbfab4f2ebfe0d..360967d240cb01b6b7e5aa7e885cadd3e9a5985d 100644
--- a/ui/gfx/favicon_size.h
+++ b/ui/gfx/favicon_size.h
@@ -12,6 +12,15 @@ namespace gfx {
 // Size (along each axis) of the favicon.
 UI_EXPORT extern const int kFaviconSize;
 
+// Default size of the favicon.
+UI_EXPORT extern const int kSizeInDip;

[sky, 2013/07/01 13:48:00]

AFAICT all of these are only used in one place. Why do we need them here?
Additionally kSizeInDip is not descriptive. Size of what?

[pedro (no code reviews), 2013/07/01 22:33:30]

I moved this constants to where they're being used, and renamed them to
something more descriptive.

+
+// 2x size of the favicon.
+UI_EXPORT extern const int kSizeInDip2x;
+
+// 4x size of the favicon.
+UI_EXPORT extern const int kSizeInDip4x;
+
 // If the width or height is bigger than the favicon size, a new width/height
 // is calculated and returned in width/height that maintains the aspect
 // ratio of the supplied values.