Revert of Move core web_view code to extensions.

chrome/browser/guest_view/web_view/web_view_renderer_state.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/browser/guest_view/web_view/web_view_renderer_state.h"
+#include "content/public/browser/browser_thread.h"
+
+using content::BrowserThread;
+
+namespace extensions {
+
+// static
+WebViewRendererState* WebViewRendererState::GetInstance() {
+  return Singleton<WebViewRendererState>::get();
+}
+
+WebViewRendererState::WebViewRendererState() {
+}
+
+WebViewRendererState::~WebViewRendererState() {
+}
+
+bool WebViewRendererState::IsGuest(int render_process_id) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  return webview_partition_id_map_.find(render_process_id) !=
+         webview_partition_id_map_.end();
+}
+
+void WebViewRendererState::AddGuest(int guest_process_id,
+                                    int guest_routing_id,
+                                    const WebViewInfo& webview_info) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  RenderId render_id(guest_process_id, guest_routing_id);
+  webview_info_map_[render_id] = webview_info;
+  WebViewPartitionIDMap::iterator iter =
+      webview_partition_id_map_.find(guest_process_id);
+  if (iter != webview_partition_id_map_.end()) {
+    ++iter->second.web_view_count;
+    return;
+  }
+  WebViewPartitionInfo partition_info(1, webview_info.partition_id);
+  webview_partition_id_map_[guest_process_id] = partition_info;
+}
+
+void WebViewRendererState::RemoveGuest(int guest_process_id,
+                                       int guest_routing_id) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  RenderId render_id(guest_process_id, guest_routing_id);
+  webview_info_map_.erase(render_id);
+  WebViewPartitionIDMap::iterator iter =
+      webview_partition_id_map_.find(guest_process_id);
+  if (iter != webview_partition_id_map_.end() &&
+      iter->second.web_view_count > 1) {
+    --iter->second.web_view_count;
+    return;
+  }
+  webview_partition_id_map_.erase(guest_process_id);
+}
+
+bool WebViewRendererState::GetInfo(int guest_process_id,
+                                   int guest_routing_id,
+                                   WebViewInfo* webview_info) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  RenderId render_id(guest_process_id, guest_routing_id);
+  WebViewInfoMap::iterator iter = webview_info_map_.find(render_id);
+  if (iter != webview_info_map_.end()) {
+    *webview_info = iter->second;
+    return true;
+  }
+  return false;
+}
+
+bool WebViewRendererState::GetPartitionID(int guest_process_id,
+                                          std::string* partition_id) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  WebViewPartitionIDMap::iterator iter =
+      webview_partition_id_map_.find(guest_process_id);
+  if (iter != webview_partition_id_map_.end()) {
+    *partition_id = iter->second.partition_id;
+    return true;
+  }
+  return false;
+}
+
+}  // namespace extensions