Don't build the task manager into Android builds.

chrome/chrome_tests.gypi

 # 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' : {
     'pyautolib_sources': [
       'app/chrome_command_ids.h',
       'app/chrome_dll_resource.h',
       'common/automation_constants.h',
       'common/pref_names.cc',
@@ skipping 2174 matching lines @@
           'sources/': [
             ['exclude', '^browser/automation/automation_provider_unittest.cc'],
             ['exclude', '^browser/accessibility/browser_accessibility_win_unittest.cc'],
             ['exclude', '^browser/ui/views/extensions/browser_action_drag_data_unittest.cc'],
             ['exclude', '^browser/ui/views/select_file_dialog_win_unittest.cc'],
             ['exclude', '^browser/ui/views/bookmarks/bookmark_editor_view_unittest.cc'],
             ['exclude', '^browser/ui/panels/display_settings_provider_win_unittest.cc'],
             ['exclude', '^browser/bookmarks/bookmark_node_data_unittest.cc'],
           ],
         }],
+        ['enable_task_manager==0', {
+          'sources/': [
+            ['exclude', '^browser/task_manager/'],
+            ['exclude', '^browser/ui/webui/task_manager/'],
+          ],
+        }],
         ['file_manager_extension==0', {
           'sources!': [
             'browser/ui/views/select_file_dialog_extension_unittest.cc',
           ],
         }],
         ['configuration_policy==0', {
           'sources!': [
             'browser/prefs/proxy_policy_unittest.cc',
           ],
           'sources/': [
@@ skipping 2459 matching lines @@
               # Use outputs of this action as inputs for the main target build.
               # Seems as a misnomer but makes this happy on Linux (scons).
               'process_outputs_as_sources': 1,
             },
           ],  # 'actions'
         },
       ]
     }],  # 'coverage!=0'
   ],  # 'conditions'
 }