Revert of Enable find-in-page across GuestViews.

content/browser/browser_plugin/browser_plugin_guest.cc

Index: content/browser/browser_plugin/browser_plugin_guest.cc
diff --git a/content/browser/browser_plugin/browser_plugin_guest.cc b/content/browser/browser_plugin/browser_plugin_guest.cc
index bdaa407ccc61d0f09881494d5aa7b45ea7c288c6..e6baddc7d35f1ff5d1b0efcf65ba65ddca6405d2 100644
--- a/content/browser/browser_plugin/browser_plugin_guest.cc
+++ b/content/browser/browser_plugin/browser_plugin_guest.cc
@@ -147,8 +147,6 @@ int BrowserPluginGuest::GetGuestProxyRoutingID() {
   // create a RenderFrameProxyHost for the reverse path, or implement
   // MimeHandlerViewGuest using OOPIF (https://crbug.com/659750).
   SiteInstance* owner_site_instance = delegate_->GetOwnerSiteInstance();
-  if (!owner_site_instance)
-    return MSG_ROUTING_NONE;
   int proxy_routing_id = GetWebContents()
                              ->GetFrameTree()
                              ->root()
@@ -180,13 +178,8 @@ void BrowserPluginGuest::SizeContents(const gfx::Size& new_size) {
 
 void BrowserPluginGuest::WillDestroy() {
   is_in_destruction_ = true;
-
-  // It is important that the WebContents is notified of destruction before
-  // detaching.
-  GetWebContents()->BrowserPluginGuestWillDestroy();
-
-  attached_ = false;
   owner_web_contents_ = nullptr;
+  attached_ = false;
 }
 
 RenderWidgetHostImpl* BrowserPluginGuest::GetOwnerRenderWidgetHost() const {
@@ -437,6 +430,17 @@ void BrowserPluginGuest::OnRequireSequence(
   GetSurfaceManager()->RequireSequence(id, sequence);
 }
 
+bool BrowserPluginGuest::HandleFindForEmbedder(
+    int request_id,
+    const base::string16& search_text,
+    const blink::WebFindOptions& options) {
+  return delegate_->HandleFindForEmbedder(request_id, search_text, options);
+}
+
+bool BrowserPluginGuest::HandleStopFindingForEmbedder(StopFindAction action) {
+  return delegate_->HandleStopFindingForEmbedder(action);
+}
+
 void BrowserPluginGuest::ResendEventToEmbedder(
     const blink::WebInputEvent& event) {
   if (!attached() || !owner_web_contents_)