Revert of Revert of Migrate accessibility from RenderView to RenderFrame.

content/renderer/render_view_impl_params.cc

Index: content/renderer/render_view_impl_params.cc
diff --git a/content/renderer/render_view_impl_params.cc b/content/renderer/render_view_impl_params.cc
index 81522d8edc54b5f27b7ad0a1ddc2e1909412e16b..6864a3d0edcd3d0fa26b4836ed35ff414c4ad9aa 100644
--- a/content/renderer/render_view_impl_params.cc
+++ b/content/renderer/render_view_impl_params.cc
@@ -22,8 +22,7 @@
     bool hidden,
     bool never_visible,
     int32 next_page_id,
-    const blink::WebScreenInfo& screen_info,
-    AccessibilityMode accessibility_mode)
+    const blink::WebScreenInfo& screen_info)
     : opener_id(opener_id),
       window_was_created_with_opener(window_was_created_with_opener),
       renderer_prefs(renderer_prefs),
@@ -39,8 +38,7 @@
       hidden(hidden),
       never_visible(never_visible),
       next_page_id(next_page_id),
-      screen_info(screen_info),
-      accessibility_mode(accessibility_mode) {}
+      screen_info(screen_info) {}
 
 RenderViewImplParams::~RenderViewImplParams() {}