Migrate accessibility from RenderView to RenderFrame.

content/renderer/render_frame_impl.h

Index: content/renderer/render_frame_impl.h
diff --git a/content/renderer/render_frame_impl.h b/content/renderer/render_frame_impl.h
index 7d9171cdcdc32e2e7c4ac881e9bce6b40ba8cb48..ff0d9c039a0bb3391ae16df9b7549a98dba38661 100644
--- a/content/renderer/render_frame_impl.h
+++ b/content/renderer/render_frame_impl.h
@@ -14,6 +14,7 @@
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/process/process_handle.h"
+#include "content/common/accessibility_mode_enums.h"
 #include "content/public/common/javascript_message_type.h"
 #include "content/public/common/referrer.h"
 #include "content/public/renderer/render_frame.h"
@@ -21,6 +22,7 @@
 #include "content/renderer/render_frame_proxy.h"
 #include "content/renderer/renderer_webcookiejar_impl.h"
 #include "ipc/ipc_message.h"
+#include "third_party/WebKit/public/web/WebAXObject.h"
 #include "third_party/WebKit/public/web/WebDataSource.h"
 #include "third_party/WebKit/public/web/WebFrameClient.h"
 #include "third_party/WebKit/public/web/WebHistoryCommitType.h"
@@ -57,6 +59,7 @@ class ChildFrameCompositingHelper;
 class MediaStreamClient;
 class NotificationProvider;
 class PepperPluginInstanceImpl;
+class RendererAccessibility;
 class RendererPpapiHost;
 class RenderFrameObserver;
 class RenderViewImpl;
@@ -133,6 +136,22 @@ class CONTENT_EXPORT RenderFrameImpl
   virtual void didStopLoading();
   virtual void didChangeLoadProgress(double load_progress);
 
+  AccessibilityMode accessibility_mode() {
+    return accessibility_mode_;
+  }
+
+  RendererAccessibility* renderer_accessibility() {
+    return renderer_accessibility_;
+  }
+
+  void HandleWebAccessibilityEvent(const blink::WebAXObject& obj,
+                                   blink::WebAXEvent event);
+
+  // TODO(dmazzoni): the only reason this is here is to plumb it through to
+  // RendererAccessibility. It should be part of RenderFrameObserver, once
+  // blink has a separate accessibility tree per frame.
+  void FocusedNodeChanged(const blink::WebNode& node);
+
 #if defined(ENABLE_PLUGINS)
   // Notification that a PPAPI plugin has been created.
   void PepperPluginCreated(RendererPpapiHost* host);
@@ -394,9 +413,10 @@ class CONTENT_EXPORT RenderFrameImpl
 
  private:
   friend class RenderFrameObserver;
+  friend class RendererAccessibilityTest;
   FRIEND_TEST_ALL_PREFIXES(RendererAccessibilityTest,
                            AccessibilityMessagesQueueWhileSwappedOut);
-    FRIEND_TEST_ALL_PREFIXES(RenderFrameImplTest,
+  FRIEND_TEST_ALL_PREFIXES(RenderFrameImplTest,
                            ShouldUpdateSelectionTextFromContextMenuParams);
   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
                            OnExtendSelectionAndDelete);
@@ -404,6 +424,8 @@ class CONTENT_EXPORT RenderFrameImpl
   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest, SendSwapOutACK);
   FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
                            SetEditableSelectionAndComposition);
+  FRIEND_TEST_ALL_PREFIXES(RenderViewImplTest,
+                           OnSetAccessibilityMode);
 
   typedef std::map<GURL, double> HostZoomLevels;
 
@@ -452,6 +474,7 @@ class CONTENT_EXPORT RenderFrameImpl
       const std::vector<blink::WebCompositionUnderline>& underlines);
   void OnExtendSelectionAndDelete(int before, int after);
   void OnReload(bool ignore_cache);
+  void OnSetAccessibilityMode(AccessibilityMode new_mode);
 #if defined(OS_MACOSX)
   void OnCopyToFindPboard();
 #endif
@@ -593,6 +616,13 @@ class CONTENT_EXPORT RenderFrameImpl
   MediaStreamClient* media_stream_client_;
   blink::WebUserMediaClient* web_user_media_client_;
 
+  // The current accessibility mode.
+  AccessibilityMode accessibility_mode_;
+
+  // Only valid if |accessibility_mode_| is anything other than
+  // AccessibilityModeOff.
+  RendererAccessibility* renderer_accessibility_;
+
   base::WeakPtrFactory<RenderFrameImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameImpl);