Revert of Pepper: Clean up ProgressEvent logic.

components/nacl/renderer/progress_event.cc

-// Copyright 2014 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 "components/nacl/renderer/progress_event.h"
-
-#include "base/bind.h"
-#include "base/location.h"
-#include "base/logging.h"
-#include "base/message_loop/message_loop_proxy.h"
-#include "content/public/renderer/pepper_plugin_instance.h"
-#include "ppapi/c/private/ppb_nacl_private.h"
-#include "ppapi/shared_impl/ppapi_globals.h"
-#include "third_party/WebKit/public/platform/WebString.h"
-#include "third_party/WebKit/public/web/WebDOMResourceProgressEvent.h"
-#include "third_party/WebKit/public/web/WebDocument.h"
-#include "third_party/WebKit/public/web/WebElement.h"
-#include "third_party/WebKit/public/web/WebLocalFrame.h"
-#include "third_party/WebKit/public/web/WebPluginContainer.h"
-#include "v8/include/v8.h"
-
-namespace nacl {
-
-namespace {
-blink::WebString EventTypeToString(PP_NaClEventType event_type) {
-  switch (event_type) {
-    case PP_NACL_EVENT_LOADSTART:
-      return blink::WebString::fromUTF8("loadstart");
-    case PP_NACL_EVENT_PROGRESS:
-      return blink::WebString::fromUTF8("progress");
-    case PP_NACL_EVENT_ERROR:
-      return blink::WebString::fromUTF8("error");
-    case PP_NACL_EVENT_ABORT:
-      return blink::WebString::fromUTF8("abort");
-    case PP_NACL_EVENT_LOAD:
-      return blink::WebString::fromUTF8("load");
-    case PP_NACL_EVENT_LOADEND:
-      return blink::WebString::fromUTF8("loadend");
-    case PP_NACL_EVENT_CRASH:
-      return blink::WebString::fromUTF8("crash");
-  }
-  NOTIMPLEMENTED();
-  return blink::WebString();
-}
-
-void DispatchProgressEventOnMainThread(PP_Instance instance,
-                                       const ProgressEvent &event) {
-  content::PepperPluginInstance* plugin_instance_ =
-      content::PepperPluginInstance::Get(instance);
-
-  blink::WebPluginContainer* container = plugin_instance_->GetContainer();
-  // It's possible that container() is NULL if the plugin has been removed from
-  // the DOM (but the PluginInstance is not destroyed yet).
-  if (!container)
-    return;
-  blink::WebLocalFrame* frame = container->element().document().frame();
-  if (!frame)
-    return;
-  v8::HandleScope handle_scope(plugin_instance_->GetIsolate());
-  v8::Local<v8::Context> context(
-      plugin_instance_->GetIsolate()->GetCurrentContext());
-  if (context.IsEmpty()) {
-    // If there's no JavaScript on the stack, we have to make a new Context.
-    context = v8::Context::New(plugin_instance_->GetIsolate());
-  }
-  v8::Context::Scope context_scope(context);
-
-  if (!event.resource_url.empty()) {
-    blink::WebString url_string = blink::WebString::fromUTF8(
-        event.resource_url.data(), event.resource_url.size());
-    blink::WebDOMResourceProgressEvent blink_event(
-        EventTypeToString(event.event_type),
-        event.length_is_computable,
-        event.loaded_bytes,
-        event.total_bytes,
-        url_string);
-    container->element().dispatchEvent(blink_event);
-  } else {
-    blink::WebDOMProgressEvent blink_event(EventTypeToString(event.event_type),
-                                           event.length_is_computable,
-                                           event.loaded_bytes,
-                                           event.total_bytes);
-    container->element().dispatchEvent(blink_event);
-  }
-}
-
-}  // namespace
-
-void DispatchProgressEvent(PP_Instance instance, const ProgressEvent &event) {
-  ppapi::PpapiGlobals::Get()->GetMainThreadMessageLoop()->PostTask(
-      FROM_HERE,
-      base::Bind(&DispatchProgressEventOnMainThread, instance, event));
-}
-
-}  // namespace nacl