AutoFill: Release the cached frame when we receive the frameDestroyed() message
from WebKit.

BUG=48857
TEST=none

Review URL: http://codereview.chromium.org/3173005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@55789 0039d316-1c4b-4281-b951-d872f2087c98
void RenderView::didSelectAutoFillSuggestion(const WebKit::WebNode& node,
                                             const WebKit::WebString& value,
                                             const WebKit::WebString& label,
                                             int unique_id) {
  autofill_helper_.DidSelectAutoFillSuggestion(node, value, label, unique_id);
}

void RenderView::didSelectAutoFillSuggestion(const WebKit::WebNode& node,
                                             const WebKit::WebString& value,
                                             const WebKit::WebString& label,
                                             int unique_id) {
  autofill_helper_.DidSelectAutoFillSuggestion(node, value, label, unique_id);
}
