Migrate Event API methods to Google Style.

views/controls/menu/submenu_view.cc

Index: views/controls/menu/submenu_view.cc
===================================================================
--- views/controls/menu/submenu_view.cc	(revision 74326)
+++ views/controls/menu/submenu_view.cc	(working copy)
@@ -195,11 +195,11 @@
   // If the first item isn't entirely visible, make it visible, otherwise make
   // the next/previous one entirely visible.
 #if defined(OS_WIN)
-  int delta = abs(e.GetOffset() / WHEEL_DELTA);
+  int delta = abs(e.offset() / WHEEL_DELTA);
 #elif defined(OS_LINUX)
-  int delta = abs(e.GetOffset());
+  int delta = abs(e.offset());
 #endif
-  for (bool scroll_up = (e.GetOffset() > 0); delta != 0; --delta) {
+  for (bool scroll_up = (e.offset() > 0); delta != 0; --delta) {
     int scroll_target;
     if (scroll_up) {
       if (GetMenuItemAt(first_vis_index)->y() == vis_bounds.y()) {