Allow various font weights in gfx.

ui/base/resource/resource_bundle.h

Index: ui/base/resource/resource_bundle.h
diff --git a/ui/base/resource/resource_bundle.h b/ui/base/resource/resource_bundle.h
index 61f2861b1e9db8e63f5c4ce103233a0e864598dc..3e2b76419496a437fc9795f4065227bb36e92f4f 100644
--- a/ui/base/resource/resource_bundle.h
+++ b/ui/base/resource/resource_bundle.h
@@ -246,7 +246,8 @@ class UI_BASE_EXPORT ResourceBundle {
   // The result is always cached and exists for the lifetime of the process.
   const gfx::FontList& GetFontListWithDelta(
       int size_delta,
-      gfx::Font::FontStyle style = gfx::Font::NORMAL);
+      gfx::Font::FontStyle style = gfx::Font::NORMAL,
+      gfx::Font::Weight weight = gfx::Font::Weight::NORMAL);
 
   // Returns the primary font from the FontList given by GetFontListWithDelta().
   const gfx::Font& GetFontWithDelta(
@@ -314,6 +315,8 @@ class UI_BASE_EXPORT ResourceBundle {
   class ResourceBundleImageSource;
   friend class ResourceBundleImageSource;
 
+  struct FontKey;
+
   typedef base::hash_map<int, base::string16> IdToStringMap;
 
   // Ctor/dtor are private, since we're a singleton.
@@ -433,7 +436,7 @@ class UI_BASE_EXPORT ResourceBundle {
   // platform base font size, plus style, to the FontList. Cached to avoid
   // repeated GDI creation/destruction and font derivation.
   // Must be accessed only while holding |images_and_fonts_lock_|.
-  std::map<std::pair<int, gfx::Font::FontStyle>, gfx::FontList> font_cache_;
+  std::map<FontKey, gfx::FontList> font_cache_;
 
   base::FilePath overridden_pak_path_;