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::didLoadResourceFromMemoryCache(
    WebFrame* frame, const WebURLRequest& request,
    const WebURLResponse& response) {
  Send(new ViewHostMsg_DidLoadResourceFromMemoryCache(
      routing_id_,
      request.url(),
      frame->securityOrigin().toString().utf8(),
      frame->top()->securityOrigin().toString().utf8(),
      response.securityInfo()));
}

void RenderView::didLoadResourceFromMemoryCache(
    WebFrame* frame, const WebURLRequest& request,
    const WebURLResponse& response) {
  Send(new ViewHostMsg_DidLoadResourceFromMemoryCache(
      routing_id_,
      request.url(),
      frame->securityOrigin().toString().utf8(),
      frame->top()->securityOrigin().toString().utf8(),
      response.securityInfo()));
}
