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 f19a24aa2214f0ed1d01ba28ba15da9516025de5..090abadbca6459fdc5dbf8a71317968bdff029f6 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -45,6 +45,8 @@
 #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"
@@ -364,6 +366,8 @@ RenderFrameImpl::RenderFrameImpl(RenderViewImpl* render_view, int routing_id)
       notification_provider_(NULL),
       media_stream_client_(NULL),
       web_user_media_client_(NULL),
+      accessibility_mode_(AccessibilityModeOff),
+      renderer_accessibility_(NULL),
       weak_factory_(this) {
   RenderThread::Get()->AddRoute(routing_id_, this);
 
@@ -439,8 +443,8 @@ void RenderFrameImpl::PepperTextInputTypeChanged(
     return;
 
   GetRenderWidget()->UpdateTextInputType();
-  if (render_view_->renderer_accessibility())
-    render_view_->renderer_accessibility()->FocusedNodeChanged(WebNode());
+  if (renderer_accessibility())
+    renderer_accessibility()->FocusedNodeChanged(WebNode());
 }
 
 void RenderFrameImpl::PepperCaretPositionChanged(
@@ -652,6 +656,8 @@ bool RenderFrameImpl::OnMessageReceived(const IPC::Message& msg) {
                         OnSetCompositionFromExistingText)
     IPC_MESSAGE_HANDLER(FrameMsg_ExtendSelectionAndDelete,
                         OnExtendSelectionAndDelete)
+    IPC_MESSAGE_HANDLER(FrameMsg_SetAccessibilityMode,
+                        OnSetAccessibilityMode)
 #if defined(OS_MACOSX)
     IPC_MESSAGE_HANDLER(InputMsg_CopyToFindPboard, OnCopyToFindPboard)
 #endif
@@ -1131,6 +1137,24 @@ 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);
@@ -3022,6 +3046,12 @@ void RenderFrameImpl::didChangeLoadProgress(double load_progress) {
   render_view_->FrameDidChangeLoadProgress(frame_, load_progress);
 }
 
+void RenderFrameImpl::HandleWebAccessibilityEvent(
+    const blink::WebAXObject& obj, blink::WebAXEvent event) {
+  if (renderer_accessibility_)
+    renderer_accessibility_->HandleWebAccessibilityEvent(obj, event);
+}
+
 WebNavigationPolicy RenderFrameImpl::DecidePolicyForNavigation(
     RenderFrame* render_frame,
     WebFrame* frame,