Added support for Text only zoom...

chrome/browser/tab_contents/tab_contents_view_gtk.cc

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/tab_contents/tab_contents_view_gtk.h"
 
 #include <gdk/gdk.h>
 #include <gtk/gtk.h>
 
 #include "base/string_util.h"
@@ skipping 58 matching lines @@
     tab_contents->delegate()->ContentsMouseEvent(tab_contents, true);
   return FALSE;
 }
 
 // See tab_contents_view_win.cc for discussion of mouse scroll zooming.
 gboolean OnMouseScroll(GtkWidget* widget, GdkEventScroll* event,
                        TabContents* tab_contents) {
   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;
     }
   }
 
   return FALSE;
 }
 
 // Used with gtk_container_foreach to change the sizes of the children of
 // |fixed_|.
 void SetSizeRequest(GtkWidget* widget, gpointer userdata) {
@@ skipping 333 matching lines @@
     gtk_container_child_set_property(GTK_CONTAINER(floating_container),
                                      widget, "x", &value);
 
     int child_y = std::max(half_view_height - (requisition.height / 2), 0);
     g_value_set_int(&value, child_y);
     gtk_container_child_set_property(GTK_CONTAINER(floating_container),
                                      widget, "y", &value);
     g_value_unset(&value);
   }
 }