IOKit Framework is mac-only.

chrome/chrome.gyp

Index: chrome/chrome.gyp
diff --git a/chrome/chrome.gyp b/chrome/chrome.gyp
index 4b07b2c61e675bf9080d1c8e9a2341dbc3e52d60..65c01f541ccab44f93c09238a978b610bcbdd765 100755
--- a/chrome/chrome.gyp
+++ b/chrome/chrome.gyp
@@ -6750,11 +6750,6 @@
             '../third_party/libjingle/libjingle.gyp:libjingle',
             'sync_proto',
           ],
-          'link_settings': {
-            'libraries': [
-              '$(SDKROOT)/System/Library/Frameworks/IOKit.framework',
-	    ],
-          },
           'conditions': [
             ['OS=="win"', {
               'sources' : [
@@ -6768,6 +6763,13 @@
                 'POSIX',
               ],
             }],
+            ['OS=="mac"', {
+              'link_settings': {
+                'libraries': [
+                  '$(SDKROOT)/System/Library/Frameworks/IOKit.framework',
+                ],
+              },
+            }],
           ],
         },
       ],  # targets when chrome_personalization==1