Migrate accessibility from RenderView to RenderFrame.

content/renderer/accessibility/renderer_accessibility.cc

Index: content/renderer/accessibility/renderer_accessibility.cc
diff --git a/content/renderer/accessibility/renderer_accessibility.cc b/content/renderer/accessibility/renderer_accessibility.cc
index 62015ea8c52823a92f76165f5b38569d9e16effe..75832a6a8635d3c1e5ce8f2898ad5eb9cead4a2a 100644
--- a/content/renderer/accessibility/renderer_accessibility.cc
+++ b/content/renderer/accessibility/renderer_accessibility.cc
@@ -6,6 +6,7 @@
 
 #include "base/command_line.h"
 #include "content/public/common/content_switches.h"
+#include "content/renderer/render_frame_impl.h"
 #include "content/renderer/render_view_impl.h"
 #include "third_party/WebKit/public/web/WebAXObject.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
@@ -20,9 +21,9 @@ using blink::WebView;
 namespace content {
 
 RendererAccessibility::RendererAccessibility(
-    RenderViewImpl* render_view)
-    : RenderViewObserver(render_view),
-      render_view_(render_view),
+    RenderFrameImpl* render_frame)
+    : RenderFrameObserver(render_frame),
+      render_frame_(render_frame),
       logging_(false) {
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
   if (command_line.HasSwitch(switches::kEnableAccessibilityLogging))
@@ -33,7 +34,7 @@ RendererAccessibility::~RendererAccessibility() {
 }
 
 WebDocument RendererAccessibility::GetMainDocument() {
-  WebView* view = render_view()->GetWebView();
+  WebView* view = render_frame_->render_view()->GetWebView();
   WebFrame* main_frame = view ? view->mainFrame() : NULL;
 
   if (main_frame)