Refactor and send voice interaction structure

content/browser/web_contents/web_contents_impl.h

Index: content/browser/web_contents/web_contents_impl.h
diff --git a/content/browser/web_contents/web_contents_impl.h b/content/browser/web_contents/web_contents_impl.h
index 5a621c32adb4b39566006e10f588efde2b39d2f2..02701500ec6d98bce5c24aa5f0ef639dcc7df9af 100644
--- a/content/browser/web_contents/web_contents_impl.h
+++ b/content/browser/web_contents/web_contents_impl.h
@@ -232,13 +232,6 @@ class CONTENT_EXPORT WebContentsImpl
   // bitmap.
   void AddAccessibilityMode(AccessibilityMode mode);
 
-  // Request a one-time snapshot of the accessibility tree without changing
-  // the accessibility mode.
-  using AXTreeSnapshotCallback =
-      base::Callback<void(
-          const ui::AXTreeUpdate&)>;
-  void RequestAXTreeSnapshot(AXTreeSnapshotCallback callback);
-
   // Set a temporary zoom level for the frames associated with this WebContents.
   // If |is_temporary| is true, we are setting a new temporary zoom level,
   // otherwise we are clearing a previously set temporary zoom level.
@@ -313,6 +306,7 @@ class CONTENT_EXPORT WebContentsImpl
   bool IsWaitingForResponse() const override;
   const net::LoadStateWithParam& GetLoadState() const override;
   const base::string16& GetLoadStateHost() const override;
+  void RequestAXTreeSnapshot(AXTreeSnapshotCallback callback) override;
   uint64_t GetUploadSize() const override;
   uint64_t GetUploadPosition() const override;
   const std::string& GetEncoding() const override;