Update the makefile and gyp for the debugger.
Review URL: https://codereview.appspot.com/6355052

git-svn-id: http://skia.googlecode.com/svn/trunk@4410 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gyp/debugger.gyp b/gyp/debugger.gyp
index 0789a96..33b0932 100644
--- a/gyp/debugger.gyp
+++ b/gyp/debugger.gyp
@@ -54,6 +54,9 @@
             ],
           },
         }],
+        [ 'skia_os == "mac" and skia_arch_width != 64', {
+          'error': '<!(skia_arch_width must be 64 bits when building the debugger on mac'
+        }],
         [ 'skia_os == "mac"', {
           'mac_bundle' : 1,
           'include_dirs': [