Add IPCs to allow assistive technology to scroll the page

content/browser/renderer_host/render_widget_host.cc

Index: content/browser/renderer_host/render_widget_host.cc
===================================================================
--- content/browser/renderer_host/render_widget_host.cc	(revision 112764)
+++ content/browser/renderer_host/render_widget_host.cc	(working copy)
@@ -1445,6 +1445,18 @@
   Send(new ViewMsg_SetAccessibilityFocus(routing_id(), object_id));
 }
 
+void RenderWidgetHost::AccessibilityChangeScrollPosition(
+    int object_id, int scroll_x, int scroll_y) {
+  Send(new ViewMsg_AccessibilityChangeScrollPosition(
+      routing_id(), object_id, scroll_x, scroll_y));
+}
+
+void RenderWidgetHost::AccessibilitySetTextSelection(
+    int object_id, int start_offset, int end_offset) {
+  Send(new ViewMsg_AccessibilitySetTextSelection(
+      routing_id(), object_id, start_offset, end_offset));
+}
+
 void RenderWidgetHost::ExecuteEditCommand(const std::string& command,
                                           const std::string& value) {
   Send(new ViewMsg_ExecuteEditCommand(routing_id(), command, value));