Add supports that allow Autofill to be initiated from textarea field

components/autofill/content/renderer/page_click_listener.h

Index: components/autofill/content/renderer/page_click_listener.h
diff --git a/components/autofill/content/renderer/page_click_listener.h b/components/autofill/content/renderer/page_click_listener.h
index 1fc7862fe9e29796e6b547483345928494d50b4a..00936629a89c17da58f013f94b07344cee7b2c0a 100644
--- a/components/autofill/content/renderer/page_click_listener.h
+++ b/components/autofill/content/renderer/page_click_listener.h
@@ -7,6 +7,7 @@
 
 namespace blink {
 class WebInputElement;
+class WebTextAreaElement;
 }
 
 namespace autofill {
@@ -23,9 +24,13 @@ class PageClickListener {
                                    bool was_focused,
                                    bool is_focused) = 0;
 
-  // If the previously focused element was an input field, listeners are
-  // informed that the text field has lost its focus.
-  virtual void InputElementLostFocus() = 0;
+  virtual void TextAreaElementClicked(const blink::WebTextAreaElement& element,
+                                      bool was_focused,
+                                      bool is_focused) = 0;
+
+  // If the previously focused element was an input or textarea field,
+  // listeners are informed that the text field has lost its focus.
+  virtual void FormControlElementLostFocus() = 0;
 
  protected:
   virtual ~PageClickListener() {}