Remove lots of old blur plumbing.

content/browser/renderer_host/render_view_host_delegate.h

Index: content/browser/renderer_host/render_view_host_delegate.h
diff --git a/content/browser/renderer_host/render_view_host_delegate.h b/content/browser/renderer_host/render_view_host_delegate.h
index 9a451590f98099a37a86afb20d4c47b29fb4015c..880589292c94fb996b476284bfa2b1fc6d230bab 100644
--- a/content/browser/renderer_host/render_view_host_delegate.h
+++ b/content/browser/renderer_host/render_view_host_delegate.h
@@ -161,10 +161,9 @@ class CONTENT_EXPORT RenderViewHostDelegate {
                                 uint64 upload_position,
                                 uint64 upload_size) {}
 
-  // The page wants the hosting window to activate/deactivate itself (it
-  // called the JavaScript window.focus()/blur() method).
+  // The page wants the hosting window to activate itself (it called the
+  // JavaScript window.focus() method).
   virtual void Activate() {}
-  virtual void Deactivate() {}
 
   // Notification that the view has lost capture.
   virtual void LostCapture() {}