Create a spellcheck component that will allow any embedder to reuse common functionality.

chrome/browser/renderer_context_menu/spelling_menu_observer.h

Index: chrome/browser/renderer_context_menu/spelling_menu_observer.h
diff --git a/chrome/browser/renderer_context_menu/spelling_menu_observer.h b/chrome/browser/renderer_context_menu/spelling_menu_observer.h
index dac209947b55011f69bda1982d987f2e48bcf597..7895b1a189fc13b87f1c22f02193841cb9221b2f 100644
--- a/chrome/browser/renderer_context_menu/spelling_menu_observer.h
+++ b/chrome/browser/renderer_context_menu/spelling_menu_observer.h
@@ -20,7 +20,10 @@
 #include "components/renderer_context_menu/render_view_context_menu_observer.h"
 
 class RenderViewContextMenuProxy;
+
+namespace spellcheck {
 struct SpellCheckResult;
+}
 
 // An observer that listens to events from the RenderViewContextMenu class and
 // shows suggestions from the Spelling ("do you mean") service to a context menu
@@ -60,7 +63,7 @@ class SpellingMenuObserver : public RenderViewContextMenuObserver {
       SpellingServiceClient::ServiceType type,
       bool success,
       const base::string16& text,
-      const std::vector<SpellCheckResult>& results);
+      const std::vector<spellcheck::SpellCheckResult>& results);
 
  private:
   // The callback function for base::RepeatingTimer. This function updates the