Completed the code path from AndroidProviderService to HistoryBackend.

chrome/chrome_tests.gypi

Index: chrome/chrome_tests.gypi
diff --git a/chrome/chrome_tests.gypi b/chrome/chrome_tests.gypi
index aee1c47c99d2ab1b8696cf0b46ab6cf4db7d6ef3..435da429d120c1f0bc1544b394be339431f7aac0 100644
--- a/chrome/chrome_tests.gypi
+++ b/chrome/chrome_tests.gypi
@@ -1142,6 +1142,7 @@
         'app/chrome_dll.rc',
         # All unittests in browser, common, renderer and service.
         'browser/about_flags_unittest.cc',
+        'browser/android_provider_service_unittest.cc',
         'browser/app_controller_mac_unittest.mm',
         'browser/autocomplete/autocomplete_edit_unittest.cc',
         'browser/autocomplete/autocomplete_result_unittest.cc',
@@ -2510,6 +2511,10 @@
             ['exclude', '^common/service_'],
             ['exclude', '^service/'],
           ],
+        }, { # else: OS != "android"
+          'sources!': [
+            'browser/android_provider_service_unittest.cc',
+          ],
         }],
         ['enable_themes==0', {
           'sources!': [