Adds a BrowserAccessibilityManager accessor to RenderWidgetHostView.

content/browser/renderer_host/render_widget_host_view_mac.h

Index: content/browser/renderer_host/render_widget_host_view_mac.h
diff --git a/content/browser/renderer_host/render_widget_host_view_mac.h b/content/browser/renderer_host/render_widget_host_view_mac.h
index 074b88d6464015c6bdd636678440e413851331a4..4d5f2b3491a2e068229d0887fdaba85bcddfbe1a 100644
--- a/content/browser/renderer_host/render_widget_host_view_mac.h
+++ b/content/browser/renderer_host/render_widget_host_view_mac.h
@@ -15,7 +15,6 @@
 #include "base/memory/weak_ptr.h"
 #include "base/time.h"
 #include "content/browser/accessibility/browser_accessibility_delegate_mac.h"
-#include "content/browser/accessibility/browser_accessibility_manager.h"
 #include "content/browser/renderer_host/accelerated_surface_container_manager_mac.h"
 #include "content/browser/renderer_host/render_widget_host_view.h"
 #include "content/common/edit_command.h"
@@ -316,8 +315,6 @@ class RenderWidgetHostViewMac : public RenderWidgetHostView {
   // paint requests by expanding the invalid rect rather than actually painting.
   bool about_to_validate_and_paint_;
 
-  scoped_ptr<BrowserAccessibilityManager> browser_accessibility_manager_;
-
   // This is true when we have already scheduled a call to
   // |-callSetNeedsDisplayInRect:| but it has not been fulfilled yet.  Used to
   // prevent us from scheduling multiple calls.