Abstracted AutofillMsg_SetNodeText IPC out of core autofill code.

components/autofill/core/browser/autofill_external_delegate.h

Index: components/autofill/core/browser/autofill_external_delegate.h
diff --git a/components/autofill/core/browser/autofill_external_delegate.h b/components/autofill/core/browser/autofill_external_delegate.h
index 8c3b63c627803f8adc68b189bee3b20814983c99..95c483b8ac2036edf839e3f9661be5cdbeadb385 100644
--- a/components/autofill/core/browser/autofill_external_delegate.h
+++ b/components/autofill/core/browser/autofill_external_delegate.h
@@ -21,10 +21,6 @@ namespace gfx {
 class Rect;
 }
 
-namespace content {
-class WebContents;
-}
-
 namespace autofill {
 
 class AutofillDriver;
@@ -103,8 +99,6 @@ class AutofillExternalDelegate
       const PasswordFormFillData& fill_data);
 
  protected:
-  content::WebContents* web_contents() { return web_contents_; }
-
   base::WeakPtr<AutofillExternalDelegate> GetWeakPtr();
 
  private:
@@ -135,8 +129,6 @@ class AutofillExternalDelegate
                             std::vector<base::string16>* autofill_icons,
                             std::vector<int>* autofill_unique_ids);
 
-  // The web_contents associated with this delegate.
-  content::WebContents* web_contents_;  // weak; owns me.
   AutofillManager* autofill_manager_;  // weak.
 
   // Provides driver-level context to the shared code of the component. Must