Re-lands 58186:

app/app_base.gypi

Index: app/app_base.gypi
diff --git a/app/app_base.gypi b/app/app_base.gypi
index adefed77e49bff652401a7e8a4f41430296dd078..f02d190e82d3b549149d6a9c9c09adb61e901a24 100644
--- a/app/app_base.gypi
+++ b/app/app_base.gypi
@@ -116,6 +116,8 @@
         'drag_drop_types_gtk.cc',
         'drag_drop_types_win.cc',
         'drag_drop_types.h',
+        'event_synthesis_gtk.cc',
+        'event_synthesis_gtk.h',
         'file_download_interface.h',
         'gfx/font_util.h',
         'gfx/font_util.cc',
@@ -144,6 +146,17 @@
         'gtk_signal_registrar.h',
         'gtk_util.cc',
         'gtk_util.h',
+        'keyboard_code_conversion.cc',
+        'keyboard_code_conversion.h',
+        'keyboard_code_conversion_gtk.cc',
+        'keyboard_code_conversion_gtk.h',
+        'keyboard_code_conversion_mac.mm',
+        'keyboard_code_conversion_mac.h',
+        'keyboard_code_conversion_win.cc',
+        'keyboard_code_conversion_win.h',
+        'keyboard_codes.h',
+        'keyboard_codes_win.h',
+        'keyboard_codes_posix.h',
         'l10n_util.cc',
         'l10n_util.h',
         'l10n_util_mac.h',
@@ -305,6 +318,11 @@
             '<(gl_binding_output_dir)/gl_bindings_autogen_glx.cc',
             '<(gl_binding_output_dir)/gl_bindings_autogen_glx.h',
           ],
+          'sources!': [
+            'keyboard_code_conversion_mac.mm',
+            'keyboard_code_conversion_mac.h',
+            'keyboard_codes_win.h',
+          ],
           'include_dirs': [
             # We don't use angle, but pull the EGL/GLES headers from there.
             '../third_party/angle/include',
@@ -330,6 +348,13 @@
               '$(SDKROOT)/System/Library/Frameworks/OpenGL.framework',
             ],
           },
+          'sources!': [
+            'event_synthesis_gtk.cc',
+            'event_synthesis_gtk.h',
+            'keyboard_code_conversion_gtk.cc',
+            'keyboard_code_conversion_gtk.h',
+            'keyboard_codes_win.h',
+          ],
         }],
         ['OS=="win"', {
           'include_dirs': [
@@ -343,6 +368,15 @@
             '<(gl_binding_output_dir)/gl_bindings_autogen_wgl.cc',
             '<(gl_binding_output_dir)/gl_bindings_autogen_wgl.h',
           ],
+          'sources!': [
+            'event_synthesis_gtk.cc',
+            'event_synthesis_gtk.h',
+            'keyboard_code_conversion_gtk.cc',
+            'keyboard_code_conversion_gtk.h',
+            'keyboard_code_conversion_mac.mm',
+            'keyboard_code_conversion_mac.h',
+            'keyboard_codes_posix.h',
+          ],
         }],
       ],
     },