x11: Include X11 dependencies only when building with X11.

ui/ui.gyp

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'includes': [
     'shell_dialogs.gypi',
@@ skipping 597 matching lines @@
           'sources/': [
             ['exclude', '^base/gestures/*'],
           ]
         }],
         ['use_glib == 1', {
           'dependencies': [
             # font_gtk.cc uses fontconfig.
             '../build/linux/system.gyp:fontconfig',
             '../build/linux/system.gyp:glib',
             '../build/linux/system.gyp:pangocairo',
-            '../build/linux/system.gyp:x11',
-            '../build/linux/system.gyp:xext',
-            '../build/linux/system.gyp:xfixes',
           ],
-          'link_settings': {
-            'libraries': [
-              '-lXcursor',  # For XCursor* function calls in x11_util.cc.
-              '-lXrender',  # For XRender* function calls in x11_util.cc.
-              '-lXrandr',   # For XRR* function calls in x11_util.cc.
-            ],
-          },
           'conditions': [
             ['toolkit_views==0', {
               # Note: because of gyp predence rules this has to be defined as
               # 'sources/' rather than 'sources!'.
               'sources/': [
                 ['exclude', '^base/dragdrop/drag_drop_types_gtk.cc'],
                 ['exclude', '^base/dragdrop/drag_utils_gtk.cc'],
                 ['exclude', '^base/dragdrop/drag_utils.cc'],
                 ['exclude', '^base/dragdrop/drag_utils.h'],
                 ['exclude', '^base/dragdrop/os_exchange_data.cc'],
@@ skipping 123 matching lines @@
         ['use_x11==1', {
           'all_dependent_settings': {
             'ldflags': [
               '-L<(PRODUCT_DIR)',
             ],
             'link_settings': {
               'libraries': [
                 '-lX11',
                 '-lXcursor',
                 '-lXrandr',  # For XRR* function calls in x11_util.cc.
+                '-lXrender',  # For XRender* function calls in x11_util.cc.
               ],
             },
           },
+          'link_settings': {
+            'libraries': [
+              '-lX11',
+              '-lXcursor',
+              '-lXrandr',  # For XRR* function calls in x11_util.cc.
+              '-lXrender',  # For XRender* function calls in x11_util.cc.
+            ],
+          },
+          'dependencies': [
+            '../build/linux/system.gyp:x11',
+            '../build/linux/system.gyp:xext',
+            '../build/linux/system.gyp:xfixes',
+          ],
         }, {  # use_x11==0
           'sources/': [
             ['exclude', 'base/keycodes/keyboard_code_conversion_x.*'],
             ['exclude', 'base/x/*'],
           ],
         }],
         ['toolkit_views==0', {
           'sources!': [
             'base/events/event.cc',
             'base/events/event.h',
@@ skipping 144 matching lines @@
           'link_settings': {
             'libraries': [
               '$(SDKROOT)/System/Library/Frameworks/Cocoa.framework',
             ],
           },
         },
       ],
     }],
   ],
 }