Split //ios/chrome/browser in multiple targets.

ios/chrome/browser/geolocation/BUILD.gn

Index: ios/chrome/browser/geolocation/BUILD.gn
diff --git a/ios/chrome/browser/geolocation/BUILD.gn b/ios/chrome/browser/geolocation/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..1fdb8a8bb2a6e2623b2936ae98c73cc8bdf598c8
--- /dev/null
+++ b/ios/chrome/browser/geolocation/BUILD.gn
@@ -0,0 +1,64 @@
+# Copyright 2016 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.
+
+source_set("geolocation") {
+  sources = [
+    "CLLocation+OmniboxGeolocation.h",
+    "CLLocation+OmniboxGeolocation.mm",
+    "CLLocation+XGeoHeader.h",
+    "CLLocation+XGeoHeader.mm",
+    "location_manager+Testing.h",
+    "location_manager.h",
+    "location_manager.mm",
+    "omnibox_geolocation_authorization_alert.h",
+    "omnibox_geolocation_authorization_alert.mm",
+    "omnibox_geolocation_config.h",
+    "omnibox_geolocation_config.mm",
+    "omnibox_geolocation_local_state.h",
+    "omnibox_geolocation_local_state.mm",
+  ]
+  deps = [
+    "//base",
+    "//components/prefs",
+    "//components/strings",
+    "//ios/chrome/app/strings",
+    "//ios/chrome/browser:browser_no_public_deps",
+    "//ios/chrome/browser/updatable_config",
+    "//ios/public/provider/chrome/browser",
+    "//third_party/google_toolbox_for_mac",
+    "//ui/base",
+    "//url",
+  ]
+  libs = [ "CoreLocation.framework" ]
+}
+
+source_set("test_support") {
+  testonly = true
+  sources = [
+    "test_location_manager.h",
+    "test_location_manager.mm",
+  ]
+  deps = [
+    ":geolocation",
+    "//base",
+  ]
+}
+
+source_set("unit_tests") {
+  testonly = true
+  sources = [
+    "CLLocation+XGeoHeaderTest.mm",
+    "location_manager_unittest.mm",
+    "omnibox_geolocation_local_state_unittest.mm",
+  ]
+  deps = [
+    ":geolocation",
+    "//base",
+    "//components/prefs:test_support",
+    "//ios/chrome/test:test_support",
+    "//ios/public/provider/chrome/browser",
+    "//testing/gtest",
+    "//third_party/ocmock",
+  ]
+}