Introduce WebViewGuestDelegate.

chrome/browser/guest_view/web_view/web_view_guest.cc

Index: chrome/browser/guest_view/web_view/web_view_guest.cc
diff --git a/chrome/browser/guest_view/web_view/web_view_guest.cc b/chrome/browser/guest_view/web_view/web_view_guest.cc
index 504e7999fa192800cf7c2320f462095079c79080..8eaad99bba3d33231c94d91ee538affef92524cf 100644
--- a/chrome/browser/guest_view/web_view/web_view_guest.cc
+++ b/chrome/browser/guest_view/web_view/web_view_guest.cc
@@ -7,22 +7,13 @@
 #include "base/message_loop/message_loop.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
-#include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/extensions/api/web_request/web_request_api.h"
 #include "chrome/browser/extensions/api/web_view/web_view_internal_api.h"
-#include "chrome/browser/extensions/chrome_extension_web_contents_observer.h"
-#include "chrome/browser/extensions/menu_manager.h"
-#include "chrome/browser/favicon/favicon_tab_helper.h"
+#include "chrome/browser/guest_view/web_view/chrome_web_view_guest_delegate.h"
 #include "chrome/browser/guest_view/web_view/web_view_constants.h"
 #include "chrome/browser/guest_view/web_view/web_view_permission_helper.h"
 #include "chrome/browser/guest_view/web_view/web_view_permission_types.h"
 #include "chrome/browser/guest_view/web_view/web_view_renderer_state.h"
-#include "chrome/browser/renderer_context_menu/render_view_context_menu.h"
-#include "chrome/browser/ui/pdf/pdf_tab_helper.h"
-#include "chrome/browser/ui/zoom/zoom_controller.h"
-#include "chrome/common/chrome_version_info.h"
-#include "chrome/common/render_messages.h"
-#include "components/renderer_context_menu/context_menu_delegate.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/child_process_security_policy.h"
 #include "content/public/browser/native_web_keyboard_event.h"
@@ -55,19 +46,6 @@
 #include "third_party/WebKit/public/web/WebFindOptions.h"
 #include "ui/base/models/simple_menu_model.h"
 
-#if defined(ENABLE_PRINTING)
-#if defined(ENABLE_FULL_PRINTING)
-#include "chrome/browser/printing/print_preview_message_handler.h"
-#include "chrome/browser/printing/print_view_manager.h"
-#else
-#include "chrome/browser/printing/print_view_manager_basic.h"
-#endif  // defined(ENABLE_FULL_PRINTING)
-#endif  // defined(ENABLE_PRINTING)
-
-#if defined(OS_CHROMEOS)
-#include "chrome/browser/chromeos/accessibility/accessibility_manager.h"
-#endif
-
 using base::UserMetricsAction;
 using content::RenderFrameHost;
 using content::ResourceType;
@@ -209,22 +187,6 @@ int WebViewGuest::GetViewInstanceId(WebContents* contents) {
   return guest->view_instance_id();
 }
 
-// static
-scoped_ptr<base::ListValue> WebViewGuest::MenuModelToValue(
-    const ui::SimpleMenuModel& menu_model) {
-  scoped_ptr<base::ListValue> items(new base::ListValue());
-  for (int i = 0; i < menu_model.GetItemCount(); ++i) {
-    base::DictionaryValue* item_value = new base::DictionaryValue();
-    // TODO(lazyboy): We need to expose some kind of enum equivalent of
-    // |command_id| instead of plain integers.
-    item_value->SetInteger(webview::kMenuItemCommandId,
-                           menu_model.GetCommandIdAt(i));
-    item_value->SetString(webview::kMenuItemLabel, menu_model.GetLabelAt(i));
-    items->Append(item_value);
-  }
-  return items.Pass();
-}
-
 const char* WebViewGuest::GetAPINamespace() {
   return webview::kAPINamespace;
 }
@@ -345,38 +307,12 @@ void WebViewGuest::DidInitialize() {
       this, content::NOTIFICATION_RESOURCE_RECEIVED_REDIRECT,
       content::Source<WebContents>(guest_web_contents()));
 
-#if defined(OS_CHROMEOS)
-  chromeos::AccessibilityManager* accessibility_manager =
-      chromeos::AccessibilityManager::Get();
-  CHECK(accessibility_manager);
-  accessibility_subscription_ = accessibility_manager->RegisterCallback(
-      base::Bind(&WebViewGuest::OnAccessibilityStatusChanged,
-                 base::Unretained(this)));
-#endif
-
+  web_view_guest_delegate_->OnDidInitialize();
   AttachWebViewHelpers(guest_web_contents());
 }
 
 void WebViewGuest::AttachWebViewHelpers(WebContents* contents) {
-  // Create a zoom controller for the guest contents give it access to
-  // GetZoomLevel() and and SetZoomLevel() in WebViewGuest.
-  // TODO(wjmaclean) This currently uses the same HostZoomMap as the browser
-  // context, but we eventually want to isolate the guest contents from zoom
-  // changes outside the guest (e.g. in the main browser), so we should
-  // create a separate HostZoomMap for the guest.
-  ZoomController::CreateForWebContents(contents);
-
-  FaviconTabHelper::CreateForWebContents(contents);
-  ChromeExtensionWebContentsObserver::CreateForWebContents(contents);
-#if defined(ENABLE_PRINTING)
-#if defined(ENABLE_FULL_PRINTING)
-  printing::PrintViewManager::CreateForWebContents(contents);
-  printing::PrintPreviewMessageHandler::CreateForWebContents(contents);
-#else
-  printing::PrintViewManagerBasic::CreateForWebContents(contents);
-#endif  // defined(ENABLE_FULL_PRINTING)
-#endif  // defined(ENABLE_PRINTING)
-  PDFTabHelper::CreateForWebContents(contents);
+  web_view_guest_delegate_->OnAttachWebViewHelpers(contents);
   web_view_permission_helper_.reset(new WebViewPermissionHelper(this));
 }
 
@@ -406,11 +342,7 @@ void WebViewGuest::EmbedderDestroyed() {
 
 void WebViewGuest::GuestDestroyed() {
   // Clean up custom context menu items for this guest.
-  MenuManager* menu_manager = MenuManager::Get(
-      Profile::FromBrowserContext(browser_context()));
-  menu_manager->RemoveAllContextItems(MenuItem::ExtensionKey(
-      embedder_extension_id(), view_instance_id()));
-
+  web_view_guest_delegate_->OnGuestDestroyed();
   RemoveWebViewStateFromIOThread(web_contents());
 }
 
@@ -480,21 +412,9 @@ void WebViewGuest::FindReply(WebContents* source,
 
 bool WebViewGuest::HandleContextMenu(
     const content::ContextMenuParams& params) {
-  ContextMenuDelegate* menu_delegate =
-      ContextMenuDelegate::FromWebContents(guest_web_contents());
-  DCHECK(menu_delegate);
-
-  pending_menu_ = menu_delegate->BuildMenu(guest_web_contents(), params);
-
-  // Pass it to embedder.
-  int request_id = ++pending_context_menu_request_id_;
-  scoped_ptr<base::DictionaryValue> args(new base::DictionaryValue());
-  scoped_ptr<base::ListValue> items =
-      MenuModelToValue(pending_menu_->menu_model());
-  args->Set(webview::kContextMenuItems, items.release());
-  args->SetInteger(webview::kRequestId, request_id);
-  DispatchEventToEmbedder(
-      new GuestViewBase::Event(webview::kEventContextMenu, args.Pass()));
+  GuestViewBase::Event* event =
+      web_view_guest_delegate_->OnHandleContextMenu(params);
+  DispatchEventToEmbedder(event);
   return true;
 }
 
@@ -634,7 +554,7 @@ void WebViewGuest::Observe(int type,
 }
 
 double WebViewGuest::GetZoom() {
-  return current_zoom_factor_;
+  return web_view_guest_delegate_->GetZoom();
 }
 
 void WebViewGuest::Find(
@@ -709,12 +629,10 @@ bool WebViewGuest::ClearData(const base::Time remove_since,
 WebViewGuest::WebViewGuest(content::BrowserContext* browser_context,
                            int guest_instance_id)
     : GuestView<WebViewGuest>(browser_context, guest_instance_id),
-      pending_context_menu_request_id_(0),
       is_overriding_user_agent_(false),
-      chromevox_injected_(false),
-      current_zoom_factor_(1.0),
       find_helper_(this),
       javascript_dialog_helper_(this) {
+  web_view_guest_delegate_.reset(new ChromeWebViewGuestDelegate(this));
 }
 
 WebViewGuest::~WebViewGuest() {
@@ -738,14 +656,8 @@ void WebViewGuest::DidCommitProvisionalLoadForFrame(
   DispatchEventToEmbedder(
       new GuestViewBase::Event(webview::kEventLoadCommit, args.Pass()));
 
-  // Update the current zoom factor for the new page.
-  ZoomController* zoom_controller =
-      ZoomController::FromWebContents(guest_web_contents());
-  DCHECK(zoom_controller);
-  current_zoom_factor_ = zoom_controller->GetZoomLevel();
-
-  if (!render_frame_host->GetParent())
-    chromevox_injected_ = false;
+  web_view_guest_delegate_->OnDidCommitProvisionalLoadForFrame(
+      !render_frame_host->GetParent());
 }
 
 void WebViewGuest::DidFailProvisionalLoad(
@@ -975,33 +887,9 @@ void WebViewGuest::NavigateGuest(const std::string& src) {
                     guest_web_contents());
 }
 
-#if defined(OS_CHROMEOS)
-void WebViewGuest::OnAccessibilityStatusChanged(
-    const chromeos::AccessibilityStatusEventDetails& details) {
-  if (details.notification_type == chromeos::ACCESSIBILITY_MANAGER_SHUTDOWN) {
-    accessibility_subscription_.reset();
-  } else if (details.notification_type ==
-      chromeos::ACCESSIBILITY_TOGGLE_SPOKEN_FEEDBACK) {
-    if (details.enabled)
-      InjectChromeVoxIfNeeded(guest_web_contents()->GetRenderViewHost());
-    else
-      chromevox_injected_ = false;
-  }
-}
-#endif
-
 void WebViewGuest::InjectChromeVoxIfNeeded(
     content::RenderViewHost* render_view_host) {
-#if defined(OS_CHROMEOS)
-  if (!chromevox_injected_) {
-    chromeos::AccessibilityManager* manager =
-        chromeos::AccessibilityManager::Get();
-    if (manager && manager->IsSpokenFeedbackEnabled()) {
-      manager->InjectChromeVox(render_view_host);
-      chromevox_injected_ = true;
-    }
-  }
-#endif
+  web_view_guest_delegate_->InjectChromeVoxIfNeeded(render_view_host);
 }
 
 bool WebViewGuest::HandleKeyboardShortcuts(
@@ -1066,21 +954,10 @@ void WebViewGuest::SetUpAutoSize() {
               gfx::Size(max_width, max_height));
 }
 
-void WebViewGuest::ShowContextMenu(int request_id,
-                                   const MenuItemVector* items) {
-  if (!pending_menu_.get())
-    return;
-
-  // Make sure this was the correct request.
-  if (request_id != pending_context_menu_request_id_)
-    return;
-
-  // TODO(lazyboy): Implement.
-  DCHECK(!items);
-
-  ContextMenuDelegate* menu_delegate =
-      ContextMenuDelegate::FromWebContents(guest_web_contents());
-  menu_delegate->ShowMenu(pending_menu_.Pass());
+void WebViewGuest::ShowContextMenu(
+    int request_id,
+    const WebViewGuestDelegate::MenuItemVector* items) {
+  web_view_guest_delegate_->OnShowContextMenu(request_id, items);
 }
 
 void WebViewGuest::SetName(const std::string& name) {
@@ -1092,19 +969,15 @@ void WebViewGuest::SetName(const std::string& name) {
 }
 
 void WebViewGuest::SetZoom(double zoom_factor) {
-  ZoomController* zoom_controller =
-      ZoomController::FromWebContents(guest_web_contents());
-  DCHECK(zoom_controller);
-  double zoom_level = content::ZoomFactorToZoomLevel(zoom_factor);
-  zoom_controller->SetZoomLevel(zoom_level);
-
-  scoped_ptr<base::DictionaryValue> args(new base::DictionaryValue());
-  args->SetDouble(webview::kOldZoomFactor, current_zoom_factor_);
-  args->SetDouble(webview::kNewZoomFactor, zoom_factor);
-  DispatchEventToEmbedder(
-      new GuestViewBase::Event(webview::kEventZoomChange, args.Pass()));
-
-  current_zoom_factor_ = zoom_factor;
+  GuestViewBase::Event* event = web_view_guest_delegate_->OnSetZoom(
+      zoom_factor,
+      webview::kOldZoomFactor,
+      webview::kNewZoomFactor,
+      webview::kEventZoomChange);
+  if (!event)
+    return;
+  DispatchEventToEmbedder(event);
+  web_view_guest_delegate_->SetCurrentZoomFactor(zoom_factor);
 }
 
 void WebViewGuest::AddNewContents(content::WebContents* source,