Add IPC to notify BrowserPlugin when RenderProcess is ready.

content/browser/browser_plugin/browser_plugin_guest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/browser_plugin/browser_plugin_guest.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
@@ skipping 621 matching lines @@
   RecordAction(base::UserMetricsAction("BrowserPlugin.Guest.DidNavigate"));
 }
 
 void BrowserPluginGuest::RenderViewReady() {
   RenderViewHost* rvh = GetWebContents()->GetRenderViewHost();
   // TODO(fsamuel): Investigate whether it's possible to update state earlier
   // here (see http://crbug.com/158151).
   Send(new InputMsg_SetFocus(routing_id(), focused_));
   UpdateVisibility();
 
+  // In case we've created a new guest render process after a crash, let the
+  // associated BrowserPlugin know. We only need to send this if we're attached,
+  // as the guest_crashed_ is cleared automaticall on attach anyways.

[kenrb, 2016/10/07 15:41:13]

nit: typo 'automaticall'

+  if (attached()) {
+    SendMessageToEmbedder(
+        new BrowserPluginMsg_GuestReady(browser_plugin_instance_id()));
+  }
+
   RenderWidgetHostImpl::From(rvh->GetWidget())
       ->set_hung_renderer_delay(
           base::TimeDelta::FromMilliseconds(kHungRendererDelayMs));
 }
 
 void BrowserPluginGuest::RenderProcessGone(base::TerminationStatus status) {
   SendMessageToEmbedder(
       new BrowserPluginMsg_GuestGone(browser_plugin_instance_id()));
   switch (status) {
 #if defined(OS_CHROMEOS)
@@ skipping 374 matching lines @@
           range, character_bounds);
 }
 #endif
 
 void BrowserPluginGuest::SetContextMenuPosition(const gfx::Point& position) {
   if (delegate_)
     delegate_->SetContextMenuPosition(position);
 }
 
 }  // namespace content