Migrate accessibility from RenderView to RenderFrame.

content/public/browser/web_contents.h

Index: content/public/browser/web_contents.h
diff --git a/content/public/browser/web_contents.h b/content/public/browser/web_contents.h
index 38830c3a86cbf2a8cfa0ed931e21c698c4238053..d572ef9c0cf666c37fb7f9a0abedd64776c066b6 100644
--- a/content/public/browser/web_contents.h
+++ b/content/public/browser/web_contents.h
@@ -187,6 +187,10 @@ class WebContents : public PageNavigator,
   virtual void ForEachFrame(
       const base::Callback<void(RenderFrameHost*)>& on_frame) = 0;
 
+  // Calls |on_frame| for each frame, including pending frames.
+  virtual void ForEachFrameAndPendingFrame(
+      const base::Callback<void(RenderFrameHost*)>& on_frame) = 0;

[jam, 2014/05/28 18:49:21]

2 nits:
-since this is only called in content, it shouldn't be in the public api
(http://www.chromium.org/developers/content-module/content-api)
-since this is only called by WebContentsImpl, also don't add it to
WebContentsImpl's public methods. pending-rvh is a concept that we have tried to
hide to as few classes as possible. so just in-line the two statements in this
method inside SetAccessibilityMode

[dmazzoni, 2014/05/28 22:01:17]

Done.

+
   // Sends the given IPC to all frames in the currently active view. This is a
   // convenience method instead of calling ForEach.
   virtual void SendToAllFrames(IPC::Message* message) = 0;
@@ -229,6 +233,18 @@ class WebContents : public PageNavigator,
   virtual void SetUserAgentOverride(const std::string& override) = 0;
   virtual const std::string& GetUserAgentOverride() const = 0;
 
+  // Enable the accessibility tree for this WebContents in the renderer,
+  // but don't enable creating a native accessibility tree on the browser
+  // side.
+  virtual void EnableTreeOnlyAccessibilityMode() = 0;
+
+  // Returns true only if "tree only" accessibility mode is on.
+  virtual bool IsTreeOnlyAccessibilityModeForTesting() const = 0;
+
+  // Returns true only if complete accessibility mode is on, meaning there's
+  // both renderer accessibility, and a native browser accessibility tree.
+  virtual bool IsFullAccessibilityModeForTesting() const = 0;
+
 #if defined(OS_WIN)
   virtual void SetParentNativeViewAccessible(
       gfx::NativeViewAccessible accessible_parent) = 0;