Revert of Update TextSelection for non-user initiated events

content/public/renderer/render_frame.h

Index: content/public/renderer/render_frame.h
diff --git a/content/public/renderer/render_frame.h b/content/public/renderer/render_frame.h
index 3cb4019af73f2ec6f7b4af3947e011ba9249d559..adf7d2a787c682a222fef09d1abc5b00d4ad0840 100644
--- a/content/public/renderer/render_frame.h
+++ b/content/public/renderer/render_frame.h
@@ -223,6 +223,11 @@
   // content created by the embedder.
   virtual void DetachGuest(int element_instance_id) = 0;
 
+  // Notifies the browser of text selection changes made.
+  virtual void SetSelectedText(const base::string16& selection_text,
+                               size_t offset,
+                               const gfx::Range& range) = 0;
+
   // Ensures that builtin mojo bindings modules are available in |context|.
   virtual void EnsureMojoBuiltinsAreAvailable(
       v8::Isolate* isolate,