libgtk2ui: cast gdk_color components to fix compilation under gcc 4.7.2

chrome/browser/ui/libgtk2ui/skia_utils_gtk2.cc

Index: chrome/browser/ui/libgtk2ui/skia_utils_gtk2.cc
diff --git a/chrome/browser/ui/libgtk2ui/skia_utils_gtk2.cc b/chrome/browser/ui/libgtk2ui/skia_utils_gtk2.cc
index 726b70ab1f766233d3865f0fb1d890b7c8592609..8d2aadac600b2f7667a1f460089db4496f01b806 100644
--- a/chrome/browser/ui/libgtk2ui/skia_utils_gtk2.cc
+++ b/chrome/browser/ui/libgtk2ui/skia_utils_gtk2.cc
@@ -22,9 +22,9 @@ SkColor GdkColorToSkColor(GdkColor color) {
 GdkColor SkColorToGdkColor(SkColor color) {
   GdkColor gdk_color = {
       0,
-      SkColorGetR(color) * kSkiaToGDKMultiplier,
-      SkColorGetG(color) * kSkiaToGDKMultiplier,
-      SkColorGetB(color) * kSkiaToGDKMultiplier
+      (guint16)(SkColorGetR(color) * kSkiaToGDKMultiplier),

[Elliot Glaysher, 2013/03/14 16:52:49]

Please use C++ static_cast<> instead of old c style casts
(http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml#Casting).

(As a side note, gobject's casts that are behind macros, like GTK_WIDGET(), are
ok to use.)

+      (guint16)(SkColorGetG(color) * kSkiaToGDKMultiplier),
+      (guint16)(SkColorGetB(color) * kSkiaToGDKMultiplier)
   };
   return gdk_color;
 }