Merge 254380 "[Mac] Re-add the NSColor sandbox warmup."

content/common/sandbox_mac.mm

Index: content/common/sandbox_mac.mm
===================================================================
--- content/common/sandbox_mac.mm	(revision 254406)
+++ content/common/sandbox_mac.mm	(working copy)
@@ -277,6 +277,12 @@
         CGColorSpaceCreateWithName(kCGColorSpaceGenericCMYK));
   }
 
+  { // -[NSColor colorUsingColorSpaceName] - 10.5.6
+    // Used in ppapi processes only. http://crbug.com/348304
+    NSColor* color = [NSColor controlTextColor];
+    [color colorUsingColorSpaceName:NSCalibratedRGBColorSpace];
+  }
+
   { // localtime() - 10.5.6
     time_t tv = {0};
     localtime(&tv);