Move PageTransition from //content/public/common to //ui/base

ui/base/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/ui.gni")
 
 if (is_android) {
   import("//build/config/android/config.gni")
   import("//build/config/android/rules.gni")
 }
@@ skipping 169 matching lines @@
     "models/simple_menu_model.h",
     "models/table_model.cc",
     "models/table_model.h",
     "models/table_model_observer.h",
     "models/tree_model.cc",
     "models/tree_model.h",
     "models/tree_node_iterator.h",
     "models/tree_node_model.h",
     "nine_image_painter_factory.cc",
     "nine_image_painter_factory.h",
+    "page_transition_types.cc",
+    "page_transition_types.h",
+    "page_transition_types_list.h",
     "resource/data_pack.cc",
     "resource/data_pack.h",
     "resource/resource_bundle.cc",
     "resource/resource_bundle.h",
     "resource/resource_bundle_android.cc",
     "resource/resource_bundle_auralinux.cc",
     "resource/resource_bundle_ios.mm",
     "resource/resource_bundle_mac.mm",
     "resource/resource_bundle_win.cc",
     "resource/resource_bundle_win.h",
@@ skipping 693 matching lines @@
     deps += [
       "//ui/aura:test_support",
       "//ui/events:gesture_detection",
       #'../chromeos/chromeos.gyp:chromeos',  TODO(GYP)
       #'chromeos/ui_chromeos.gyp:ui_chromeos',
     ]
   }
 }
 }
 # TODO(GYP) Mac (ui_unittest_bundle) and Android (ui_unittests_apk).