Remove all exclude rules that filename_rules.gypi already handles.

base/base.gypi

Index: base/base.gypi
diff --git a/base/base.gypi b/base/base.gypi
index 1abf4166064e0337e107851287d8fe3921e305f0..323d39a1eebe1f3a0efff4de0345cc02d25d3f18 100644
--- a/base/base.gypi
+++ b/base/base.gypi
@@ -867,11 +867,6 @@
               ['exclude', '(^|/)ios/'],
             ]
           }],
-          ['OS != "mac" or >(nacl_untrusted_build)==1', {
-              'sources!': [
-                'mac/scoped_aedesc.h'
-              ],
-          }],
           # For now, just test the *BSD platforms enough to exclude them.
           # Subsequent changes will include them further.
           ['OS != "freebsd" or >(nacl_untrusted_build)==1', {
@@ -882,14 +877,6 @@
               'sources/': [ ['exclude', '_openbsd\\.cc$'] ],
             },
           ],
-          ['OS != "win" or >(nacl_untrusted_build)==1', {
-              'sources/': [ ['exclude', '^win/'] ],
-            },
-          ],
-          ['OS != "android" or >(nacl_untrusted_build)==1', {
-              'sources/': [ ['exclude', '^android/'] ],
-            },
-          ],
           ['OS == "win" and >(nacl_untrusted_build)==0', {
             'include_dirs': [
               '<(DEPTH)/third_party/wtl/include',
@@ -938,11 +925,6 @@
               ['exclude', '^sys_info_linux\\.cc$'],
             ],
           }],
-          ['<(chromeos)!=1 or >(nacl_untrusted_build)==1', {
-            'sources/': [
-              ['exclude', '^chromeos/'],
-            ],
-          }],
           # Remove all unnecessary files for build_nexe.py to avoid exceeding
           # command-line-string limitation when building NaCl on Windows.
           ['OS == "win" and >(nacl_untrusted_build)==1', {