Move navigation and frame tree classes to a new frame_host/ directory.

content/browser/web_contents/render_view_host_manager.h

Index: content/browser/web_contents/render_view_host_manager.h
diff --git a/content/browser/web_contents/render_view_host_manager.h b/content/browser/web_contents/render_view_host_manager.h
deleted file mode 100644
index 9162f107f77c476984005200efd08ab26950df6a..0000000000000000000000000000000000000000
--- a/content/browser/web_contents/render_view_host_manager.h
+++ /dev/null
@@ -1,389 +0,0 @@
-// Copyright (c) 2012 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.
-
-#ifndef CONTENT_BROWSER_WEB_CONTENTS_RENDER_VIEW_HOST_MANAGER_H_
-#define CONTENT_BROWSER_WEB_CONTENTS_RENDER_VIEW_HOST_MANAGER_H_
-
-#include "base/basictypes.h"
-#include "base/logging.h"
-#include "base/memory/scoped_ptr.h"
-#include "base/memory/weak_ptr.h"
-#include "content/browser/renderer_host/render_view_host_delegate.h"
-#include "content/browser/site_instance_impl.h"
-#include "content/common/content_export.h"
-#include "content/public/browser/notification_observer.h"
-#include "content/public/browser/notification_registrar.h"
-#include "content/public/common/referrer.h"
-
-
-namespace content {
-class BrowserContext;
-class InterstitialPageImpl;
-class NavigationControllerImpl;
-class NavigationEntry;
-class NavigationEntryImpl;
-class RenderViewHost;
-class RenderViewHostImpl;
-class RenderViewHostManagerTest;
-class RenderWidgetHostDelegate;
-class RenderWidgetHostView;
-class TestWebContents;
-class WebUIImpl;
-
-// Manages RenderViewHosts for a WebContentsImpl. Normally there is only one and
-// it is easy to do. But we can also have transitions of processes (and hence
-// RenderViewHosts) that can get complex.
-class CONTENT_EXPORT RenderViewHostManager
-    : public RenderViewHostDelegate::RendererManagement,
-      public NotificationObserver {
- public:
-  // Functions implemented by our owner that we need.
-  //
-  // TODO(brettw) Clean this up! These are all the functions in WebContentsImpl
-  // that are required to run this class. The design should probably be better
-  // such that these are more clear.
-  //
-  // There is additional complexity that some of the functions we need in
-  // WebContentsImpl are inherited and non-virtual. These are named with
-  // "RenderManager" so that the duplicate implementation of them will be clear.
-  class CONTENT_EXPORT Delegate {
-   public:
-    // Initializes the given renderer if necessary and creates the view ID
-    // corresponding to this view host. If this method is not called and the
-    // process is not shared, then the WebContentsImpl will act as though the
-    // renderer is not running (i.e., it will render "sad tab"). This method is
-    // automatically called from LoadURL.
-    //
-    // If you are attaching to an already-existing RenderView, you should call
-    // InitWithExistingID.
-    virtual bool CreateRenderViewForRenderManager(
-        RenderViewHost* render_view_host, int opener_route_id) = 0;
-    virtual void BeforeUnloadFiredFromRenderManager(
-        bool proceed, const base::TimeTicks& proceed_time,
-        bool* proceed_to_fire_unload) = 0;
-    virtual void RenderProcessGoneFromRenderManager(
-        RenderViewHost* render_view_host) = 0;
-    virtual void UpdateRenderViewSizeForRenderManager() = 0;
-    virtual void CancelModalDialogsForRenderManager() = 0;
-    virtual void NotifySwappedFromRenderManager(
-        RenderViewHost* old_host, RenderViewHost* new_host) = 0;
-    virtual NavigationControllerImpl&
-        GetControllerForRenderManager() = 0;
-
-    // Create swapped out RenderViews in the given SiteInstance for each tab in
-    // the opener chain of this tab, if any.  This allows the current tab to
-    // make cross-process script calls to its opener(s).  Returns the route ID
-    // of the immediate opener, if one exists (otherwise MSG_ROUTING_NONE).
-    virtual int CreateOpenerRenderViewsForRenderManager(
-        SiteInstance* instance) = 0;
-
-    // Creates a WebUI object for the given URL if one applies. Ownership of the
-    // returned pointer will be passed to the caller. If no WebUI applies,
-    // returns NULL.
-    virtual WebUIImpl* CreateWebUIForRenderManager(const GURL& url) = 0;
-
-    // Returns the navigation entry of the current navigation, or NULL if there
-    // is none.
-    virtual NavigationEntry*
-        GetLastCommittedNavigationEntryForRenderManager() = 0;
-
-    // Returns true if the location bar should be focused by default rather than
-    // the page contents. The view calls this function when the tab is focused
-    // to see what it should do.
-    virtual bool FocusLocationBarByDefault() = 0;
-
-    // Focuses the location bar.
-    virtual void SetFocusToLocationBar(bool select_all) = 0;
-
-    // Creates a view and sets the size for the specified RVH.
-    virtual void CreateViewAndSetSizeForRVH(RenderViewHost* rvh) = 0;
-
-    // Returns true if views created for this delegate should be created in a
-    // hidden state.
-    virtual bool IsHidden() = 0;
-
-   protected:
-    virtual ~Delegate() {}
-  };
-
-  // All three delegate pointers must be non-NULL and are not owned by this
-  // class.  They must outlive this class. The RenderViewHostDelegate and
-  // RenderWidgetHostDelegate are what will be installed into all
-  // RenderViewHosts that are created.
-  //
-  // You must call Init() before using this class.
-  RenderViewHostManager(
-      RenderViewHostDelegate* render_view_delegate,
-      RenderWidgetHostDelegate* render_widget_delegate,
-      Delegate* delegate);
-  virtual ~RenderViewHostManager();
-
-  // For arguments, see WebContentsImpl constructor.
-  void Init(BrowserContext* browser_context,
-            SiteInstance* site_instance,
-            int routing_id,
-            int main_frame_routing_id);
-
-  // Returns the currently active RenderViewHost.
-  //
-  // This will be non-NULL between Init() and Shutdown(). You may want to NULL
-  // check it in many cases, however. Windows can send us messages during the
-  // destruction process after it has been shut down.
-  RenderViewHostImpl* current_host() const;
-
-  // Returns the view associated with the current RenderViewHost, or NULL if
-  // there is no current one.
-  RenderWidgetHostView* GetRenderWidgetHostView() const;
-
-  // Returns the pending render view host, or NULL if there is no pending one.
-  RenderViewHostImpl* pending_render_view_host() const;
-
-  // Returns the current committed Web UI or NULL if none applies.
-  WebUIImpl* web_ui() const { return web_ui_.get(); }
-
-  // Returns the Web UI for the pending navigation, or NULL of none applies.
-  WebUIImpl* pending_web_ui() const {
-    return pending_web_ui_.get() ? pending_web_ui_.get() :
-                                   pending_and_current_web_ui_.get();
-  }
-
-  // Sets the pending Web UI for the pending navigation, ensuring that the
-  // bindings are appropriate for the given NavigationEntry.
-  void SetPendingWebUI(const NavigationEntryImpl& entry);
-
-  // Called when we want to instruct the renderer to navigate to the given
-  // navigation entry. It may create a new RenderViewHost or re-use an existing
-  // one. The RenderViewHost to navigate will be returned. Returns NULL if one
-  // could not be created.
-  RenderViewHostImpl* Navigate(const NavigationEntryImpl& entry);
-
-  // Instructs the various live views to stop. Called when the user directed the
-  // page to stop loading.
-  void Stop();
-
-  // Notifies the regular and pending RenderViewHosts that a load is or is not
-  // happening. Even though the message is only for one of them, we don't know
-  // which one so we tell both.
-  void SetIsLoading(bool is_loading);
-
-  // Whether to close the tab or not when there is a hang during an unload
-  // handler. If we are mid-crosssite navigation, then we should proceed
-  // with the navigation instead of closing the tab.
-  bool ShouldCloseTabOnUnresponsiveRenderer();
-
-  // The RenderViewHost has been swapped out, so we should resume the pending
-  // network response and allow the pending RenderViewHost to commit.
-  void SwappedOut(RenderViewHost* render_view_host);
-
-  // Called when a renderer's main frame navigates.
-  void DidNavigateMainFrame(RenderViewHost* render_view_host);
-
-  // Called when a renderer sets its opener to null.
-  void DidDisownOpener(RenderViewHost* render_view_host);
-
-  // Helper method to create a RenderViewHost.  If |swapped_out| is true, it
-  // will be initially placed on the swapped out hosts list.  Otherwise, it
-  // will be used for a pending cross-site navigation.
-  int CreateRenderView(SiteInstance* instance,
-                       int opener_route_id,
-                       bool swapped_out,
-                       bool hidden);
-
-  // Called when a provisional load on the given renderer is aborted.
-  void RendererAbortedProvisionalLoad(RenderViewHost* render_view_host);
-
-  // Sets the passed passed interstitial as the currently showing interstitial.
-  // |interstitial_page| should be non NULL (use the remove_interstitial_page
-  // method to unset the interstitial) and no interstitial page should be set
-  // when there is already a non NULL interstitial page set.
-  void set_interstitial_page(InterstitialPageImpl* interstitial_page) {
-    DCHECK(!interstitial_page_ && interstitial_page);
-    interstitial_page_ = interstitial_page;
-  }
-
-  // Unsets the currently showing interstitial.
-  void remove_interstitial_page() {
-    DCHECK(interstitial_page_);
-    interstitial_page_ = NULL;
-  }
-
-  // Returns the currently showing interstitial, NULL if no interstitial is
-  // showing.
-  InterstitialPageImpl* interstitial_page() const { return interstitial_page_; }
-
-  // RenderViewHostDelegate::RendererManagement implementation.
-  virtual void ShouldClosePage(
-      bool for_cross_site_transition,
-      bool proceed,
-      const base::TimeTicks& proceed_time) OVERRIDE;
-  virtual void OnCrossSiteResponse(
-      RenderViewHost* pending_render_view_host,
-      const GlobalRequestID& global_request_id,
-      bool is_transfer,
-      const GURL& transfer_url,
-      const Referrer& referrer,
-      int64 frame_id) OVERRIDE;
-
-  // NotificationObserver implementation.
-  virtual void Observe(int type,
-                       const NotificationSource& source,
-                       const NotificationDetails& details) OVERRIDE;
-
-  // Called when a RenderViewHost is about to be deleted.
-  void RenderViewDeleted(RenderViewHost* rvh);
-
-  // Returns whether the given RenderViewHost is on the list of swapped out
-  // RenderViewHosts.
-  bool IsOnSwappedOutList(RenderViewHost* rvh) const;
-
-  // Returns the swapped out RenderViewHost for the given SiteInstance, if any.
-  RenderViewHostImpl* GetSwappedOutRenderViewHost(SiteInstance* instance);
-
-  // Runs the unload handler in the current page, when we know that a pending
-  // cross-process navigation is going to commit.  We may initiate a transfer
-  // to a new process after this completes or times out.
-  void SwapOutOldPage();
-
- private:
-  friend class RenderViewHostManagerTest;
-  friend class TestWebContents;
-
-  // Tracks information about a navigation while a cross-process transition is
-  // in progress, in case we need to transfer it to a new RenderViewHost.
-  struct PendingNavigationParams {
-    PendingNavigationParams();
-    PendingNavigationParams(const GlobalRequestID& global_request_id,
-                            bool is_transfer,
-                            const GURL& transfer_url,
-                            Referrer referrer,
-                            int64 frame_id);
-
-    // The child ID and request ID for the pending navigation.  Present whether
-    // |is_transfer| is true or false.
-    GlobalRequestID global_request_id;
-
-    // Whether this pending navigation needs to be transferred to another
-    // process than the one it was going to commit in.  If so, the
-    // |transfer_url|, |referrer|, and |frame_id| parameters will be set.
-    bool is_transfer;
-
-    // If |is_transfer|, this is the destination URL to request in the new
-    // process.
-    GURL transfer_url;
-
-    // If |is_transfer|, this is the referrer to use for the request in the new
-    // process.
-    Referrer referrer;
-
-    // If |is_transfer|, this is the frame ID to use in RequestTransferURL.
-    int64 frame_id;
-  };
-
-  // Returns whether this tab should transition to a new renderer for
-  // cross-site URLs.  Enabled unless we see the --process-per-tab command line
-  // switch.  Can be overridden in unit tests.
-  bool ShouldTransitionCrossSite();
-
-  // Returns true if the two navigation entries are incompatible in some way
-  // other than site instances. Cases where this can happen include Web UI
-  // to regular web pages. It will cause us to swap RenderViewHosts (and hence
-  // RenderProcessHosts) even if the site instance would otherwise be the same.
-  // As part of this, we'll also force new SiteInstances and BrowsingInstances.
-  // Either of the entries may be NULL.
-  bool ShouldSwapProcessesForNavigation(
-      const NavigationEntry* curr_entry,
-      const NavigationEntryImpl* new_entry) const;
-
-  bool ShouldReuseWebUI(
-      const NavigationEntry* curr_entry,
-      const NavigationEntryImpl* new_entry) const;
-
-  // Returns an appropriate SiteInstance object for the given NavigationEntry,
-  // possibly reusing the current SiteInstance.
-  // Never called if --process-per-tab is used.
-  SiteInstance* GetSiteInstanceForEntry(
-      const NavigationEntryImpl& entry,
-      SiteInstance* curr_instance);
-
-  // Sets up the necessary state for a new RenderViewHost with the given opener.
-  bool InitRenderView(RenderViewHost* render_view_host, int opener_route_id);
-
-  // Sets the pending RenderViewHost/WebUI to be the active one. Note that this
-  // doesn't require the pending render_view_host_ pointer to be non-NULL, since
-  // there could be Web UI switching as well. Call this for every commit.
-  void CommitPending();
-
-  // Shutdown all RenderViewHosts in a SiteInstance. This is called
-  // to shutdown views when all the views in a SiteInstance are
-  // confirmed to be swapped out.
-  void ShutdownRenderViewHostsInSiteInstance(int32 site_instance_id);
-
-  // Helper method to terminate the pending RenderViewHost.
-  void CancelPending();
-
-  RenderViewHostImpl* UpdateRendererStateForNavigate(
-      const NavigationEntryImpl& entry);
-
-  // Called when a renderer process is starting to close.  We should not
-  // schedule new navigations in its swapped out RenderViewHosts after this.
-  void RendererProcessClosing(RenderProcessHost* render_process_host);
-
-  // Our delegate, not owned by us. Guaranteed non-NULL.
-  Delegate* delegate_;
-
-  // Whether a navigation requiring different RenderView's is pending. This is
-  // either cross-site request is (in the new process model), or when required
-  // for the view type (like view source versus not).
-  bool cross_navigation_pending_;
-
-  // Implemented by the owner of this class, these delegates are installed into
-  // all the RenderViewHosts that we create.
-  RenderViewHostDelegate* render_view_delegate_;
-  RenderWidgetHostDelegate* render_widget_delegate_;
-
-  // Our RenderView host and its associated Web UI (if any, will be NULL for
-  // non-DOM-UI pages). This object is responsible for all communication with
-  // a child RenderView instance.
-  RenderViewHostImpl* render_view_host_;
-  scoped_ptr<WebUIImpl> web_ui_;
-
-  // A RenderViewHost used to load a cross-site page. This remains hidden
-  // while a cross-site request is pending until it calls DidNavigate. It may
-  // have an associated Web UI, in which case the Web UI pointer will be non-
-  // NULL.
-  //
-  // The |pending_web_ui_| may be non-NULL even when the
-  // |pending_render_view_host_| is NULL. This will happen when we're
-  // transitioning between two Web UI pages: the RVH won't be swapped, so the
-  // pending pointer will be unused, but there will be a pending Web UI
-  // associated with the navigation.
-  RenderViewHostImpl* pending_render_view_host_;
-
-  // Tracks information about any current pending cross-process navigation.
-  scoped_ptr<PendingNavigationParams> pending_nav_params_;
-
-  // If either of these is non-NULL, the pending navigation is to a chrome:
-  // page. The scoped_ptr is used if pending_web_ui_ != web_ui_, the WeakPtr is
-  // used for when they reference the same object. If either is non-NULL, the
-  // other should be NULL.
-  scoped_ptr<WebUIImpl> pending_web_ui_;
-  base::WeakPtr<WebUIImpl> pending_and_current_web_ui_;
-
-  // A map of site instance ID to swapped out RenderViewHosts.  This may include
-  // pending_render_view_host_ for navigations to existing entries.
-  typedef base::hash_map<int32, RenderViewHostImpl*> RenderViewHostMap;
-  RenderViewHostMap swapped_out_hosts_;
-
-  // The intersitial page currently shown if any, not own by this class
-  // (the InterstitialPage is self-owned, it deletes itself when hidden).
-  InterstitialPageImpl* interstitial_page_;
-
-  NotificationRegistrar registrar_;
-
-  DISALLOW_COPY_AND_ASSIGN(RenderViewHostManager);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_WEB_CONTENTS_RENDER_VIEW_HOST_MANAGER_H_