Added support for Text only zoom...

chrome/browser/views/tab_contents/tab_contents_view_gtk.cc

Index: chrome/browser/views/tab_contents/tab_contents_view_gtk.cc
===================================================================
--- chrome/browser/views/tab_contents/tab_contents_view_gtk.cc	(revision 19223)
+++ chrome/browser/views/tab_contents/tab_contents_view_gtk.cc	(working copy)
@@ -22,6 +22,7 @@
 #include "chrome/browser/tab_contents/tab_contents_delegate.h"
 #include "chrome/browser/views/sad_tab_view.h"
 #include "chrome/browser/views/tab_contents/render_view_context_menu_win.h"
+#include "chrome/common/page_zoom.h"
 #include "views/controls/native/native_view_host.h"
 #include "views/widget/root_view.h"
 
@@ -71,10 +72,10 @@
   if ((event->state & gtk_accelerator_get_default_mod_mask()) ==
       GDK_CONTROL_MASK) {
     if (event->direction == GDK_SCROLL_DOWN) {
-      tab_contents->delegate()->ContentsZoomChange(false);
+      tab_contents->delegate()->ContentsZoomChange(PageZoom::SMALLER);
       return TRUE;
     } else if (event->direction == GDK_SCROLL_UP) {
-      tab_contents->delegate()->ContentsZoomChange(true);
+      tab_contents->delegate()->ContentsZoomChange(PageZoom::LARGER);
       return TRUE;
     }
   }