Migrate accessibility from RenderView to RenderFrame.

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 7f05db586db58ce7b7c414b9d101da3f18a82f67..6b819f80f30f13c36bd7c7c0dd26f175b82ad20b 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -47,6 +47,8 @@
 #include "content/public/renderer/navigation_state.h"
 #include "content/public/renderer/render_frame_observer.h"
 #include "content/renderer/accessibility/renderer_accessibility.h"
+#include "content/renderer/accessibility/renderer_accessibility_complete.h"
+#include "content/renderer/accessibility/renderer_accessibility_focus_only.h"
 #include "content/renderer/browser_plugin/browser_plugin.h"
 #include "content/renderer/browser_plugin/browser_plugin_manager.h"
 #include "content/renderer/child_frame_compositing_helper.h"
@@ -412,6 +414,8 @@ RenderFrameImpl::RenderFrameImpl(RenderViewImpl* render_view, int routing_id)
       geolocation_dispatcher_(NULL),
       push_messaging_dispatcher_(NULL),
       screen_orientation_dispatcher_(NULL),
+      accessibility_mode_(AccessibilityModeOff),
+      renderer_accessibility_(NULL),
       weak_factory_(this) {
   std::pair<RoutingIDFrameMap::iterator, bool> result =
       g_routing_id_frame_map.Get().insert(std::make_pair(routing_id_, this));
@@ -502,8 +506,8 @@ void RenderFrameImpl::PepperTextInputTypeChanged(
 
   GetRenderWidget()->UpdateTextInputState(
       RenderWidget::NO_SHOW_IME, RenderWidget::FROM_NON_IME);
-  if (render_view_->renderer_accessibility())
-    render_view_->renderer_accessibility()->FocusedNodeChanged(WebNode());
+  if (renderer_accessibility())
+    renderer_accessibility()->FocusedNodeChanged(WebNode());
 }
 
 void RenderFrameImpl::PepperCaretPositionChanged(
@@ -717,6 +721,8 @@ bool RenderFrameImpl::OnMessageReceived(const IPC::Message& msg) {
                         OnTextSurroundingSelectionRequest)
     IPC_MESSAGE_HANDLER(FrameMsg_AddStyleSheetByURL,
                         OnAddStyleSheetByURL)
+    IPC_MESSAGE_HANDLER(FrameMsg_SetAccessibilityMode,
+                        OnSetAccessibilityMode)
 #if defined(OS_MACOSX)
     IPC_MESSAGE_HANDLER(InputMsg_CopyToFindPboard, OnCopyToFindPboard)
 #endif
@@ -1167,6 +1173,25 @@ void RenderFrameImpl::OnExtendSelectionAndDelete(int before, int after) {
   frame_->extendSelectionAndDelete(before, after);
 }
 
+void RenderFrameImpl::OnSetAccessibilityMode(AccessibilityMode new_mode) {
+  if (accessibility_mode_ == new_mode)
+    return;
+  accessibility_mode_ = new_mode;
+  if (renderer_accessibility_) {
+    delete renderer_accessibility_;
+    renderer_accessibility_ = NULL;
+  }
+  if (accessibility_mode_ == AccessibilityModeOff)
+    return;
+
+  if (accessibility_mode_ & AccessibilityModeFlagFullTree)
+    renderer_accessibility_ = new RendererAccessibilityComplete(this);
+#if !defined(OS_ANDROID)
+  else
+    renderer_accessibility_ = new RendererAccessibilityFocusOnly(this);
+#endif
+}
+
 void RenderFrameImpl::OnReload(bool ignore_cache) {
   frame_->reload(ignore_cache);
 }
@@ -3136,6 +3161,17 @@ void RenderFrameImpl::didChangeLoadProgress(double load_progress) {
   Send(new FrameHostMsg_DidChangeLoadProgress(routing_id_, load_progress));
 }
 
+void RenderFrameImpl::HandleWebAccessibilityEvent(
+    const blink::WebAXObject& obj, blink::WebAXEvent event) {
+  if (renderer_accessibility_)
+    renderer_accessibility_->HandleWebAccessibilityEvent(obj, event);
+}
+
+void RenderFrameImpl::FocusedNodeChanged(const WebNode& node) {
+  if (renderer_accessibility_)
+    renderer_accessibility_->FocusedNodeChanged(node);
+}
+
 WebNavigationPolicy RenderFrameImpl::DecidePolicyForNavigation(
     RenderFrame* render_frame,
     WebFrame* frame,