Allow theming of colors for the Mac.

chrome/browser/browser_theme_provider_mac.mm

Index: chrome/browser/browser_theme_provider_mac.mm
===================================================================
--- chrome/browser/browser_theme_provider_mac.mm	(revision 22474)
+++ chrome/browser/browser_theme_provider_mac.mm	(working copy)
@@ -67,6 +67,33 @@
   return empty_image;
 }
 
+NSColor* BrowserThemeProvider::GetNSColor(int id) {
+  DCHECK(CalledOnValidThread());
+
+  // Check to see if we already have the color in the cache.
+  NSColorMap::const_iterator found = nscolor_cache_.find(id);
+  if (found != nscolor_cache_.end())
+    return found->second;
+
+  ColorMap::iterator color_iter = colors_.find(GetColorKey(id));
+  if (color_iter != colors_.end()) {
+    const SkColor& sk_color = color_iter->second;
+
+    NSColor* color = [NSColor colorWithCalibratedRed:SkColorGetR(sk_color)

[Nico, 2009/09/05 21:20:23]

Come on guys. NSColor wants its channels in [0.0..1.0], while skia uses the
traditional 0..255.

I will fix this in my "final download item tweaks" CL, but this could've been
caught :-|

+                                               green:SkColorGetG(sk_color)
+                                                blue:SkColorGetB(sk_color)
+                                               alpha:SkColorGetA(sk_color)];
+
+    // We loaded successfully.  Cache the color.
+    if (color) {
+      nscolor_cache_[id] = [color retain];
+      return color;
+    }
+  }
+
+  return nil;
+}
+
 NSColor* BrowserThemeProvider::GetNSColorTint(int id) {
   DCHECK(CalledOnValidThread());