Make Chromium not scroll on ctrl-zoom. Use these patch files on the source directory, and then build.

chromium-no-ctrl-scroll-zoom.patch

--- content/browser/web_contents/web_contents_view_gtk.cc.orig	2013-03-09 20:16:51.437945192 -0500
+++ content/browser/web_contents/web_contents_view_gtk.cc	2013-03-09 20:16:56.151278267 -0500
@@ -56,6 +56,8 @@
 // See tab_contents_view_views.cc for discussion of mouse scroll zooming.
 gboolean OnMouseScroll(GtkWidget* widget, GdkEventScroll* event,
                        WebContentsImpl* web_contents) {
+  return FALSE;
+
   if ((event->state & gtk_accelerator_get_default_mod_mask()) !=
       GDK_CONTROL_MASK) {
     return FALSE;

--- content/browser/web_contents/web_contents_impl.cc.orig	2013-03-09 20:19:02.324604707 -0500
+++ content/browser/web_contents/web_contents_impl.cc	2013-03-09 20:19:04.264604601 -0500
@@ -1285,6 +1285,8 @@
 
 bool WebContentsImpl::PreHandleWheelEvent(
     const WebKit::WebMouseWheelEvent& event) {
+  return false;
+
   if (delegate_ &&
       event.wheelTicksY &&
       (event.modifiers & WebKit::WebInputEvent::ControlKey)) {

Would be real nice to see a 'disable Chrome zoom' feature added, rather than spend 4 hours compiling cc @paulirish

https://productforums.google.com/forum/#!msg/chrome/-rtDLZmN9bk/iVmQz1r5bZUJ