Issue #795 - Make nsIUserInfo component optional

This allows the nsIUserinfo component to be disabled with --disable-userinfo in mozconfig
at build time, but leaves it on by default to avoid any compatibility issues in existing
applications.

toolkit/components/startup/moz.build

@@ -18,19 +18,14 @@ UNIFIED_SOURCES += [
     'StartupTimeline.cpp',
 ]
 
-if CONFIG['OS_ARCH'] == 'WINNT':
-    # This file cannot be built in unified mode because of name clashes with Windows headers.
-    SOURCES += [
-        'nsUserInfoWin.cpp',
-    ]
-elif CONFIG['MOZ_WIDGET_TOOLKIT'] == 'cocoa':
-    UNIFIED_SOURCES += [
-        'nsUserInfoMac.mm',
-    ]
-else:
-    UNIFIED_SOURCES += [
-        'nsUserInfoUnix.cpp',
-    ]
+if CONFIG['MOZ_USERINFO']:
+    if CONFIG['OS_ARCH'] == 'WINNT':
+        # This file cannot be built in unified mode because of name clashes with Windows headers.
+        SOURCES += ['nsUserInfoWin.cpp']
+    elif CONFIG['MOZ_WIDGET_TOOLKIT'] == 'cocoa':
+        UNIFIED_SOURCES += ['nsUserInfoMac.mm']
+    else:
+        UNIFIED_SOURCES += ['nsUserInfoUnix.cpp']
 
 FINAL_LIBRARY = 'xul'
 

toolkit/components/startup/public/moz.build

@@ -4,10 +4,10 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-XPIDL_SOURCES += [
-    'nsIAppStartup.idl',
-    'nsIUserInfo.idl',
-]
+XPIDL_SOURCES += ['nsIAppStartup.idl']
+
+if CONFIG['MOZ_USERINFO']:
+    XPIDL_SOURCES += ['nsIUserInfo.idl']
 
 XPIDL_MODULE = 'appstartup'