Remove support for NPObjects.

content/child/npapi/npobject_proxy.cc

Index: content/child/npapi/npobject_proxy.cc
diff --git a/content/child/npapi/npobject_proxy.cc b/content/child/npapi/npobject_proxy.cc
deleted file mode 100644
index 45dc68d665e1d793f59e601412e08d8cd057dbe8..0000000000000000000000000000000000000000
--- a/content/child/npapi/npobject_proxy.cc
+++ /dev/null
@@ -1,509 +0,0 @@
-// Copyright 2013 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/child/npapi/npobject_proxy.h"
-
-#include "content/child/npapi/np_channel_base.h"
-#include "content/child/npapi/npobject_util.h"
-#include "content/child/plugin_messages.h"
-#include "third_party/WebKit/public/web/WebBindings.h"
-
-#if defined(ENABLE_PLUGINS)
-#include "content/child/npapi/plugin_instance.h"
-#endif
-
-using blink::WebBindings;
-
-namespace content {
-
-struct NPObjectWrapper {
-    NPObject object;
-    NPObjectProxy* proxy;
-};
-
-NPClass NPObjectProxy::npclass_proxy_ = {
-  NP_CLASS_STRUCT_VERSION,
-  NPObjectProxy::NPAllocate,
-  NPObjectProxy::NPDeallocate,
-  NPObjectProxy::NPPInvalidate,
-  NPObjectProxy::NPHasMethod,
-  NPObjectProxy::NPInvoke,
-  NPObjectProxy::NPInvokeDefault,
-  NPObjectProxy::NPHasProperty,
-  NPObjectProxy::NPGetProperty,
-  NPObjectProxy::NPSetProperty,
-  NPObjectProxy::NPRemoveProperty,
-  NPObjectProxy::NPNEnumerate,
-  NPObjectProxy::NPNConstruct
-};
-
-NPObjectProxy* NPObjectProxy::GetProxy(NPObject* object) {
-  NPObjectProxy* proxy = NULL;
-
-  // Wrapper exists only for NPObjects that we had created.
-  if (&npclass_proxy_ == object->_class) {
-    NPObjectWrapper* wrapper = reinterpret_cast<NPObjectWrapper*>(object);
-    proxy = wrapper->proxy;
-  }
-
-  return proxy;
-}
-
-NPObject* NPObjectProxy::GetUnderlyingNPObject() {
-  return NULL;
-}
-
-IPC::Listener* NPObjectProxy::GetChannelListener() {
-  return static_cast<IPC::Listener*>(this);
-}
-
-NPObjectProxy::NPObjectProxy(
-    NPChannelBase* channel,
-    int route_id,
-    int render_view_id,
-    const GURL& page_url)
-    : channel_(channel),
-      route_id_(route_id),
-      render_view_id_(render_view_id),
-      page_url_(page_url) {
-  channel_->AddRoute(route_id, this, this);
-}
-
-NPObjectProxy::~NPObjectProxy() {
-  if (channel_.get()) {
-    // This NPObjectProxy instance is now invalid and should not be reused for
-    // requests initiated by plugins. We may receive requests for the
-    // same NPObject in the context of the outgoing NPObjectMsg_Release call.
-    // We should be creating new NPObjectProxy instances to wrap these
-    // NPObjects.
-    channel_->RemoveMappingForNPObjectProxy(route_id_);
-    channel_->RemoveRoute(route_id_);
-    Send(new NPObjectMsg_Release(route_id_));
-  }
-}
-
-NPObject* NPObjectProxy::Create(NPChannelBase* channel,
-                                int route_id,
-                                int render_view_id,
-                                const GURL& page_url,
-                                NPP owner) {
-  NPObjectWrapper* obj = reinterpret_cast<NPObjectWrapper*>(
-      WebBindings::createObject(owner, &npclass_proxy_));
-  obj->proxy = new NPObjectProxy(channel, route_id, render_view_id, page_url);
-  channel->AddMappingForNPObjectProxy(route_id, &obj->object);
-  return reinterpret_cast<NPObject*>(obj);
-}
-
-bool NPObjectProxy::Send(IPC::Message* msg) {
-  if (channel_.get())
-    return channel_->Send(msg);
-
-  delete msg;
-  return false;
-}
-
-NPObject* NPObjectProxy::NPAllocate(NPP, NPClass*) {
-  return reinterpret_cast<NPObject*>(new NPObjectWrapper);
-}
-
-void NPObjectProxy::NPDeallocate(NPObject* npObj) {
-  NPObjectWrapper* obj = reinterpret_cast<NPObjectWrapper*>(npObj);
-  delete obj->proxy;
-  delete obj;
-}
-
-bool NPObjectProxy::OnMessageReceived(const IPC::Message& msg) {
-  NOTREACHED();
-  return false;
-}
-
-void NPObjectProxy::OnChannelError() {
-  // Release our ref count of the plugin channel object, as it addrefs the
-  // process.
-  channel_ = NULL;
-}
-
-bool NPObjectProxy::NPHasMethod(NPObject *obj,
-                                NPIdentifier name) {
-  if (obj == NULL)
-    return false;
-
-  bool result = false;
-  NPObjectProxy* proxy = GetProxy(obj);
-
-  if (!proxy) {
-    return obj->_class->hasMethod(obj, name);
-  }
-
-  NPIdentifier_Param name_param;
-  CreateNPIdentifierParam(name, &name_param);
-
-  proxy->Send(new NPObjectMsg_HasMethod(proxy->route_id(), name_param,
-                                        &result));
-  return result;
-}
-
-bool NPObjectProxy::NPInvoke(NPObject *obj,
-                             NPIdentifier name,
-                             const NPVariant *args,
-                             uint32_t arg_count,
-                             NPVariant *result) {
-  return NPInvokePrivate(0, obj, false, name, args, arg_count, result);
-}
-
-bool NPObjectProxy::NPInvokeDefault(NPObject *npobj,
-                                    const NPVariant *args,
-                                    uint32_t arg_count,
-                                    NPVariant *result) {
-  return NPInvokePrivate(0, npobj, true, 0, args, arg_count, result);
-}
-
-bool NPObjectProxy::NPInvokePrivate(NPP npp,
-                                    NPObject *obj,
-                                    bool is_default,
-                                    NPIdentifier name,
-                                    const NPVariant *args,
-                                    uint32_t arg_count,
-                                    NPVariant *np_result) {
-  if (obj == NULL)
-    return false;
-
-  NPObjectProxy* proxy = GetProxy(obj);
-  if (!proxy) {
-    if (is_default) {
-      return obj->_class->invokeDefault(obj, args, arg_count, np_result);
-    } else {
-      return obj->_class->invoke(obj, name, args, arg_count, np_result);
-    }
-  }
-
-  bool result = false;
-  int render_view_id = proxy->render_view_id_;
-  NPIdentifier_Param name_param;
-  if (is_default) {
-    // The data won't actually get used, but set it so we don't send random
-    // data.
-    name_param.identifier = NULL;
-  } else {
-    CreateNPIdentifierParam(name, &name_param);
-  }
-
-  // Note: This instance can get destroyed in the context of
-  // Send so addref the channel in this scope.
-  scoped_refptr<NPChannelBase> channel_copy = proxy->channel_;
-  std::vector<NPVariant_Param> args_param;
-  for (unsigned int i = 0; i < arg_count; ++i) {
-    NPVariant_Param param;
-    CreateNPVariantParam(args[i],
-                         channel_copy.get(),
-                         &param,
-                         false,
-                         render_view_id,
-                         proxy->page_url_);
-    args_param.push_back(param);
-  }
-
-  NPVariant_Param param_result;
-  NPObjectMsg_Invoke* msg = new NPObjectMsg_Invoke(
-      proxy->route_id_, is_default, name_param, args_param, &param_result,
-      &result);
-
-  // If we're in the plugin process and this invoke leads to a dialog box, the
-  // plugin will hang the window hierarchy unless we pump the window message
-  // queue while waiting for a reply.  We need to do this to simulate what
-  // happens when everything runs in-process (while calling MessageBox window
-  // messages are pumped).
-  if (IsPluginProcess() && proxy->channel()) {
-    msg->set_pump_messages_event(
-        proxy->channel()->GetModalDialogEvent(render_view_id));
-  }
-
-  GURL page_url = proxy->page_url_;
-  proxy->Send(msg);
-
-  // Send may delete proxy.
-  proxy = NULL;
-
-  if (!result)
-    return false;
-
-  CreateNPVariant(
-      param_result, channel_copy.get(), np_result, render_view_id, page_url);
-  return true;
-}
-
-bool NPObjectProxy::NPHasProperty(NPObject *obj,
-                                  NPIdentifier name) {
-  if (obj == NULL)
-    return false;
-
-  bool result = false;
-  NPObjectProxy* proxy = GetProxy(obj);
-  if (!proxy) {
-    return obj->_class->hasProperty(obj, name);
-  }
-
-  NPIdentifier_Param name_param;
-  CreateNPIdentifierParam(name, &name_param);
-
-  NPVariant_Param param;
-  proxy->Send(new NPObjectMsg_HasProperty(
-      proxy->route_id(), name_param, &result));
-
-  // Send may delete proxy.
-  proxy = NULL;
-
-  return result;
-}
-
-bool NPObjectProxy::NPGetProperty(NPObject *obj,
-                                  NPIdentifier name,
-                                  NPVariant *np_result) {
-  // Please refer to http://code.google.com/p/chromium/issues/detail?id=2556,
-  // which was a crash in the XStandard plugin during plugin shutdown. The
-  // crash occured because the plugin requests the plugin script object,
-  // which fails. The plugin does not check the result of the operation and
-  // invokes NPN_GetProperty on a NULL object which lead to the crash. If
-  // we observe similar crashes in other methods in the future, these null
-  // checks may have to be replicated in the other methods in this class.
-  if (obj == NULL)
-    return false;
-
-  NPObjectProxy* proxy = GetProxy(obj);
-  if (!proxy) {
-    return obj->_class->getProperty(obj, name, np_result);
-  }
-
-  bool result = false;
-  int render_view_id = proxy->render_view_id_;
-  NPIdentifier_Param name_param;
-  CreateNPIdentifierParam(name, &name_param);
-
-  NPVariant_Param param;
-  scoped_refptr<NPChannelBase> channel(proxy->channel_);
-
-  GURL page_url = proxy->page_url_;
-  proxy->Send(new NPObjectMsg_GetProperty(
-      proxy->route_id(), name_param, &param, &result));
-  // Send may delete proxy.
-  proxy = NULL;
-  if (!result)
-    return false;
-
-  CreateNPVariant(
-      param, channel.get(), np_result, render_view_id, page_url);
-
-  return true;
-}
-
-bool NPObjectProxy::NPSetProperty(NPObject *obj,
-                                  NPIdentifier name,
-                                  const NPVariant *value) {
-  if (obj == NULL)
-    return false;
-
-  NPObjectProxy* proxy = GetProxy(obj);
-  if (!proxy) {
-    return obj->_class->setProperty(obj, name, value);
-  }
-
-  bool result = false;
-  int render_view_id = proxy->render_view_id_;
-  NPIdentifier_Param name_param;
-  CreateNPIdentifierParam(name, &name_param);
-
-  NPVariant_Param value_param;
-  CreateNPVariantParam(
-      *value, proxy->channel(), &value_param, false, render_view_id,
-      proxy->page_url_);
-
-  proxy->Send(new NPObjectMsg_SetProperty(
-      proxy->route_id(), name_param, value_param, &result));
-  // Send may delete proxy.
-  proxy = NULL;
-
-  return result;
-}
-
-bool NPObjectProxy::NPRemoveProperty(NPObject *obj,
-                                     NPIdentifier name) {
-  if (obj == NULL)
-    return false;
-
-  bool result = false;
-  NPObjectProxy* proxy = GetProxy(obj);
-  if (!proxy) {
-    return obj->_class->removeProperty(obj, name);
-  }
-
-  NPIdentifier_Param name_param;
-  CreateNPIdentifierParam(name, &name_param);
-
-  NPVariant_Param param;
-  proxy->Send(new NPObjectMsg_RemoveProperty(
-      proxy->route_id(), name_param, &result));
-  // Send may delete proxy.
-  proxy = NULL;
-
-  return result;
-}
-
-void NPObjectProxy::NPPInvalidate(NPObject *obj) {
-  if (obj == NULL)
-    return;
-
-  NPObjectProxy* proxy = GetProxy(obj);
-  if (!proxy) {
-    obj->_class->invalidate(obj);
-    return;
-  }
-
-  proxy->Send(new NPObjectMsg_Invalidate(proxy->route_id()));
-  // Send may delete proxy.
-  proxy = NULL;
-}
-
-bool NPObjectProxy::NPNEnumerate(NPObject *obj,
-                                 NPIdentifier **value,
-                                 uint32_t *count) {
-  if (obj == NULL)
-    return false;
-
-  bool result = false;
-  NPObjectProxy* proxy = GetProxy(obj);
-  if (!proxy) {
-    if (obj->_class->structVersion >= NP_CLASS_STRUCT_VERSION_ENUM) {
-      return obj->_class->enumerate(obj, value, count);
-    } else {
-      return false;
-    }
-  }
-
-  std::vector<NPIdentifier_Param> value_param;
-  proxy->Send(new NPObjectMsg_Enumeration(
-      proxy->route_id(), &value_param, &result));
-  // Send may delete proxy.
-  proxy = NULL;
-
-  if (!result)
-    return false;
-
-  *count = static_cast<unsigned int>(value_param.size());
-  *value = static_cast<NPIdentifier *>(malloc(sizeof(NPIdentifier) * *count));
-  for (unsigned int i = 0; i < *count; ++i)
-    (*value)[i] = CreateNPIdentifier(value_param[i]);
-
-  return true;
-}
-
-bool NPObjectProxy::NPNConstruct(NPObject *obj,
-                                 const NPVariant *args,
-                                 uint32_t arg_count,
-                                 NPVariant *np_result) {
-  if (obj == NULL)
-    return false;
-
-  NPObjectProxy* proxy = GetProxy(obj);
-  if (!proxy) {
-    if (obj->_class->structVersion >= NP_CLASS_STRUCT_VERSION_CTOR) {
-      return obj->_class->construct(obj, args, arg_count, np_result);
-    } else {
-      return false;
-    }
-  }
-
-  bool result = false;
-  int render_view_id = proxy->render_view_id_;
-
-  // Note: This instance can get destroyed in the context of
-  // Send so addref the channel in this scope.
-  scoped_refptr<NPChannelBase> channel_copy = proxy->channel_;
-  std::vector<NPVariant_Param> args_param;
-  for (unsigned int i = 0; i < arg_count; ++i) {
-    NPVariant_Param param;
-    CreateNPVariantParam(args[i],
-                         channel_copy.get(),
-                         &param,
-                         false,
-                         render_view_id,
-                         proxy->page_url_);
-    args_param.push_back(param);
-  }
-
-  NPVariant_Param param_result;
-  NPObjectMsg_Construct* msg = new NPObjectMsg_Construct(
-      proxy->route_id_, args_param, &param_result, &result);
-
-  // See comment in NPObjectProxy::NPInvokePrivate.
-  if (IsPluginProcess() && proxy->channel()) {
-    msg->set_pump_messages_event(
-        proxy->channel()->GetModalDialogEvent(proxy->render_view_id_));
-  }
-
-  GURL page_url = proxy->page_url_;
-  proxy->Send(msg);
-
-  // Send may delete proxy.
-  proxy = NULL;
-
-  if (!result)
-    return false;
-
-  CreateNPVariant(
-      param_result, channel_copy.get(), np_result, render_view_id, page_url);
-  return true;
-}
-
-bool NPObjectProxy::NPNEvaluate(NPP npp,
-                                NPObject *obj,
-                                NPString *script,
-                                NPVariant *result_var) {
-  NPObjectProxy* proxy = GetProxy(obj);
-  if (!proxy) {
-    return false;
-  }
-
-  bool result = false;
-  int render_view_id = proxy->render_view_id_;
-  bool popups_allowed = false;
-
-#if defined(ENABLE_PLUGINS)
-  if (npp) {
-    PluginInstance* plugin_instance =
-        reinterpret_cast<PluginInstance*>(npp->ndata);
-    if (plugin_instance)
-      popups_allowed = plugin_instance->popups_allowed();
-  }
-#endif
-
-  NPVariant_Param result_param;
-  std::string script_str = std::string(
-      script->UTF8Characters, script->UTF8Length);
-
-  NPObjectMsg_Evaluate* msg = new NPObjectMsg_Evaluate(proxy->route_id(),
-                                                       script_str,
-                                                       popups_allowed,
-                                                       &result_param,
-                                                       &result);
-
-  // See comment in NPObjectProxy::NPInvokePrivate.
-  if (IsPluginProcess() && proxy->channel()) {
-    msg->set_pump_messages_event(
-        proxy->channel()->GetModalDialogEvent(render_view_id));
-  }
-  scoped_refptr<NPChannelBase> channel(proxy->channel_);
-
-  GURL page_url = proxy->page_url_;
-  proxy->Send(msg);
-  // Send may delete proxy.
-  proxy = NULL;
-  if (!result)
-    return false;
-
-  CreateNPVariant(
-      result_param, channel.get(), result_var, render_view_id, page_url);
-  return true;
-}
-
-}  // namespace content