Migrate accessibility from RenderView to RenderFrame.

content/browser/frame_host/render_frame_host_delegate.h

 // Copyright 2013 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.
 
 #ifndef CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_DELEGATE_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_DELEGATE_H_
 
+#include <vector>
+
 #include "base/basictypes.h"
 #include "base/i18n/rtl.h"
 #include "content/common/content_export.h"
+#include "content/common/frame_message_enums.h"
 #include "content/public/common/javascript_message_type.h"
 
+#if defined(OS_WIN)
+#include "ui/gfx/native_widget_types.h"
+#endif
+
 class GURL;
 
 namespace IPC {
 class Message;
 }
 
 namespace content {
 class RenderFrameHost;
 class WebContents;
+struct AXEventNotificationDetails;
 struct ContextMenuParams;
 
 // An interface implemented by an object interested in knowing about the state
 // of the RenderFrameHost.
 class CONTENT_EXPORT RenderFrameHostDelegate {
  public:
   // This is used to give the delegate a chance to filter IPC messages.
   virtual bool OnMessageReceived(RenderFrameHost* render_frame_host,
                                  const IPC::Message& message);
 
@@ skipping 72 matching lines @@
 
   // The page's encoding was changed and should be updated. Only called for the
   // top-level frame.
   virtual void UpdateEncoding(RenderFrameHost* render_frame_host,
                               const std::string& encoding) {}
 
   // Return this object cast to a WebContents, if it is one. If the object is
   // not a WebContents, returns NULL.
   virtual WebContents* GetAsWebContents();
 
+  // Get the accessibility mode for the WebContents that owns this frame.

[David Tseng, 2014/07/14 19:08:01]

this frame delegate's frame?

[dmazzoni, 2014/07/15 07:55:03]

I'm not sure what you mean? The WebContents is who owns the mode now.

+  virtual AccessibilityMode GetAccessibilityMode() const;

[David Tseng, 2014/07/14 19:08:01]

Does it make sense to have this on the delegate? Shouldn't the delegated object
ask the web contents for the acc mode?

Maybe it should be called when the accessibility mode changes (e.g.
AccessibilityModeChanged) much like the other methods on this delegate?

[dmazzoni, 2014/07/15 07:55:03]

WebContentsImpl is the class that implements RenderFrameHostDelegate. Everything
here is stuff we want to call into WebContentsImpl from RenderFrameHostImpl.

+
+  // Invoked when an accessibility event is received from the renderer.
+  virtual void AccessibilityEventReceived(
+      const std::vector<AXEventNotificationDetails>& details) {}
+
+#if defined(OS_WIN)

[David Tseng, 2014/07/14 19:08:01]

Why only on Win? Do we need anything for Mac as well?

[dmazzoni, 2014/07/15 07:55:03]

It's complicated - basically the parent native view isn't always available when
a RWHVA is constructed, so we have to pass it in later. We don't have that issue
on Mac. This isn't new in this change, it's just moving to RFHD.

+  // Returns the frame's parent's NativeViewAccessible.
+  virtual gfx::NativeViewAccessible GetParentNativeViewAccessible();
+#endif
+
  protected:
   virtual ~RenderFrameHostDelegate() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_DELEGATE_H_