events: Make platform specific events code into ui/events/.

ui/ui.gyp

Index: ui/ui.gyp
diff --git a/ui/ui.gyp b/ui/ui.gyp
index 316617adce39756070a18cca084f7244a3e77567..137b5f0d2d92161d8243f8722accddc93dc56468 100644
--- a/ui/ui.gyp
+++ b/ui/ui.gyp
@@ -297,7 +297,7 @@
         'base/win/accessibility_misc_utils.cc',
         'base/win/accessibility_misc_utils.h',
         'base/win/atl_module.h',
-        'base/win/events_win.cc',
+        'events/win/events_win.cc',
         'base/win/extra_sdk_defines.h',
         'base/win/foreground_helper.cc',
         'base/win/foreground_helper.h',
@@ -321,11 +321,13 @@
         'base/x/active_window_watcher_x.cc',
         'base/x/active_window_watcher_x.h',
         'base/x/active_window_watcher_x_observer.h',
-        'base/x/device_data_manager.cc',
-        'base/x/device_data_manager.h',
-        'base/x/device_list_cache_x.cc',
-        'base/x/device_list_cache_x.h',
-        'base/x/events_x.cc',
+        'events/x/device_data_manager.cc',
+        'events/x/device_data_manager.h',
+        'events/x/device_list_cache_x.cc',
+        'events/x/device_list_cache_x.h',
+        'events/x/events_x.cc',
+        'events/x/events_x_utils.cc',
+        'events/x/events_x_utils.h',
         'base/x/root_window_property_watcher_x.cc',
         'base/x/root_window_property_watcher_x.h',
         'base/x/selection_owner.cc',
@@ -336,8 +338,6 @@
         'base/x/selection_utils.h',
         'base/x/work_area_watcher_x.cc',
         'base/x/work_area_watcher_x.h',
-        'base/x/x11_atom_cache.cc',
-        'base/x/x11_atom_cache.h',
         'base/x/x11_error_tracker.cc',
         'base/x/x11_error_tracker.h',
         'base/x/x11_error_tracker_gtk.cc',
@@ -609,6 +609,8 @@
         'gfx/win/singleton_hwnd.h',
         'gfx/win/window_impl.cc',
         'gfx/win/window_impl.h',
+        'gfx/x/x11_atom_cache.cc',
+        'gfx/x/x11_atom_cache.h',
         'gfx/x/x11_types.cc',
         'gfx/x/x11_types.h',
         'webui/jstemplate_builder.cc',
@@ -879,6 +881,7 @@
           'sources/': [
             ['exclude', 'events/keycodes/keyboard_code_conversion_x.*'],
             ['exclude', 'base/x/*'],
+            ['exclude', 'events/x/*'],
           ],
         }],
         ['use_ozone==0', {
@@ -890,7 +893,6 @@
         }],
         ['toolkit_views==0', {
           'sources!': [
-            'base/x/events_x.cc',
             'base/dragdrop/drop_target_event.cc',
             'base/dragdrop/drop_target_event.h',
             'events/event.cc',
@@ -901,6 +903,7 @@
             'events/event_handler.h',
             'events/event_target.cc',
             'events/event_target.h',
+            'events/x/events_x.cc',
           ],
         }],
         ['OS=="android"', {