Implement find in page support for top level BrowserPlugins.

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index dee333635a7246c22b55117c67174828606f013c..ad31a6da9396a009f6d7210203a4096f42312090 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -2452,6 +2452,11 @@ bool WebContentsImpl::IsSubframe() const {
 void WebContentsImpl::Find(int request_id,
                            const base::string16& search_text,
                            const blink::WebFindOptions& options) {
+  // See if a top level browser plugin handles the find request first.
+  if (browser_plugin_embedder_ &&
+      browser_plugin_embedder_->Find(request_id, search_text, options)) {
+    return;
+  }
   Send(new ViewMsg_Find(GetRoutingID(), request_id, search_text, options));
 }