Pepper: Tighten GetLiveModule in PluginRegistry.

content/renderer/pepper/pepper_plugin_instance_impl.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/renderer/pepper/pepper_plugin_instance_impl.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 506 matching lines @@
       text_input_caret_(0, 0, 0, 0),
       text_input_caret_bounds_(0, 0, 0, 0),
       text_input_caret_set_(false),
       selection_caret_(0),
       selection_anchor_(0),
       pending_user_gesture_(0.0),
       document_loader_(NULL),
       external_document_load_(false),
       npp_(new NPP_t),
       isolate_(v8::Isolate::GetCurrent()),
+      is_deleted_(false),
       view_change_weak_ptr_factory_(this) {
   pp_instance_ = HostGlobals::Get()->AddInstance(this);
 
   memset(&current_print_settings_, 0, sizeof(current_print_settings_));
   module_->InstanceCreated(this);
 
   if (render_view) {  // NULL in tests
     render_view->PepperInstanceCreated(this);
     view_data_.is_page_visible = !render_view->is_hidden();
 
@@ skipping 56 matching lines @@
   HostGlobals::Get()->InstanceDeleted(pp_instance_);
 }
 
 // NOTE: Any of these methods that calls into the plugin needs to take into
 // account that the plugin may use Var to remove the <embed> from the DOM, which
 // will make the PepperWebPluginImpl drop its reference, usually the last one.
 // If a method needs to access a member of the instance after the call has
 // returned, then it needs to keep its own reference on the stack.
 
 void PepperPluginInstanceImpl::Delete() {
+  is_deleted_ = true;
+
   // Keep a reference on the stack. See NOTE above.
   scoped_refptr<PepperPluginInstanceImpl> ref(this);
   // Force the MessageChannel to release its "passthrough object" which should
   // release our last reference to the "InstanceObject" and will probably
   // destroy it. We want to do this prior to calling DidDestroy in case the
   // destructor of the instance object tries to use the instance.
   message_channel_->SetPassthroughObject(NULL);
   // If this is a NaCl plugin instance, shut down the NaCl plugin by calling
   // its DidDestroy. Don't call DidDestroy on the untrusted plugin instance,
   // since there is little that it can do at this point.
@@ skipping 10 matching lines @@
     fullscreen_container_ = NULL;
   }
 
   // Force-unbind any Graphics. In the case of Graphics2D, if the plugin
   // leaks the graphics 2D, it may actually get cleaned up after our
   // destruction, so we need its pointers to be up-to-date.
   BindGraphics(pp_instance(), 0);
   container_ = NULL;
 }
 
+bool PepperPluginInstanceImpl::is_deleted() const {
+  return is_deleted_;
+}
+
 void PepperPluginInstanceImpl::Paint(WebCanvas* canvas,
                                      const gfx::Rect& plugin_rect,
                                      const gfx::Rect& paint_rect) {
   TRACE_EVENT0("ppapi", "PluginInstance::Paint");
   if (module()->is_crashed()) {
     // Crashed plugin painting.
     if (!sad_plugin_)  // Lazily initialize bitmap.
       sad_plugin_ = GetContentClient()->renderer()->GetSadPluginBitmap();
     if (sad_plugin_)
       PaintSadPlugin(canvas, plugin_rect, *sad_plugin_);
@@ skipping 2353 matching lines @@
     // Running out-of-process. Initiate an IPC call to notify the plugin
     // process.
     ppapi::proxy::HostDispatcher* dispatcher =
         ppapi::proxy::HostDispatcher::GetForInstance(pp_instance());
     dispatcher->Send(new PpapiMsg_PPPInstance_HandleDocumentLoad(
         ppapi::API_ID_PPP_INSTANCE, pp_instance(), pending_host_id, data));
   }
 }
 
 }  // namespace content