Adding MimeHandlerView.

chrome/renderer/browser_plugin/chrome_browser_plugin_delegate.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 "chrome/renderer/browser_plugin/chrome_browser_plugin_delegate.h"
+
+#include "content/public/renderer/browser_plugin_delegate.h"
+#include "content/public/renderer/render_frame.h"
+#include "extensions/common/extension_messages.h"
+
+ChromeBrowserPluginDelegate::ChromeBrowserPluginDelegate(
+    content::RenderFrame* render_frame, const std::string& mime_type)
+    : content::BrowserPluginDelegate(render_frame, mime_type),
+      content::RenderFrameObserver(render_frame),
+      mime_type_(mime_type),
+      // TODO(lazyboy): Use browser_plugin::kInstanceIDNone.
+      element_instance_id_(0) {
+}
+
+ChromeBrowserPluginDelegate::~ChromeBrowserPluginDelegate() {
+}
+
+void ChromeBrowserPluginDelegate::SetElementInstanceID(
+    int element_instance_id) {
+  element_instance_id_ = element_instance_id;
+}
+
+void ChromeBrowserPluginDelegate::DidFinishLoading() {

[Fady Samuel, 2014/09/02 20:30:01]

nit: DCHECK_NE(elmeent_instance_id_, 0);

[lazyboy, 2014/09/02 21:44:22]

Done.

+  render_frame()->Send(
+      new ExtensionHostMsg_CreateMimeHandlerViewGuest(
+          routing_id(), html_string_, mime_type_, element_instance_id_));
+}
+
+void ChromeBrowserPluginDelegate::DidReceiveData(
+    const char* data, int data_length) {
+  std::string value(data, data_length);
+  html_string_ += value;
+}
+
+bool ChromeBrowserPluginDelegate::OnMessageReceived(
+    const IPC::Message& message) {
+  if (message.type() != ExtensionMsg_CreateMimeHandlerViewGuestACK::ID)
+    return false;
+
+  DCHECK_NE(element_instance_id_, 0);
+  int element_instance_id = 0;
+  PickleIterator iter(message);
+  bool success = iter.ReadInt(&element_instance_id);
+  DCHECK(success);
+  if (element_instance_id != element_instance_id_)
+    return false;
+
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP(ChromeBrowserPluginDelegate, message)
+    IPC_MESSAGE_HANDLER(ExtensionMsg_CreateMimeHandlerViewGuestACK,
+                        OnCreateMimeHandlerViewGuestACK)
+    IPC_MESSAGE_UNHANDLED(handled = false)
+  IPC_END_MESSAGE_MAP()
+  return handled;
+}
+
+void ChromeBrowserPluginDelegate::OnCreateMimeHandlerViewGuestACK(
+    int element_instance_id) {
+  DCHECK_NE(element_instance_id_, 0);
+  DCHECK_EQ(element_instance_id_, element_instance_id);
+  render_frame()->AttachGuest(element_instance_id);
+}