First stab at webinputevent_linux.cc. Coverts GDK events to

webkit/glue/SConscript

Index: webkit/glue/SConscript
diff --git a/webkit/glue/SConscript b/webkit/glue/SConscript
index f1a4c38a38cc74a18d5e34bd5b267d9e5099fb9c..1ad5fcbe8a788d5af24611054965956db481cca4 100644
--- a/webkit/glue/SConscript
+++ b/webkit/glue/SConscript
@@ -68,7 +68,7 @@ input_files = [
 if env['PLATFORM'] == 'win32':
   # TODO(port): These extra files aren't win32-specific, they've just not been
   # tested on other platforms yet.
-  input_files.append([
+  input_files.extend([
     '$PENDING_DIR/AccessibleBase.cpp',
     '$PENDING_DIR/AccessibleDocument.cpp',
     'glue_accessibility.cc',
@@ -82,7 +82,11 @@ if env['PLATFORM'] == 'win32':
     'plugins/plugin_string_stream.cc',
     'plugins/webplugin_delegate_impl.cc',
     'webdropdata.cc',
-    'webinputevent_win.cc',
   ])
 
+if env['PLATFORM'] == 'win32':
+  input_files.append('webinputevent_win.cc')
+elif env['PLATFORM'] == 'posix':
+  input_files.append('webinputevent_linux.cc')
+
 env.ChromeStaticLibrary('glue', input_files)