Refactor media out of WebContentsImpl to MediaWebContentsObserver.

content/browser/web_contents/web_contents_impl.h

 // 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_WEB_CONTENTS_IMPL_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 
 #include <map>
 #include <set>
 #include <string>
@@ skipping 14 matching lines @@
 #include "content/browser/media/audio_stream_monitor.h"
 #include "content/browser/renderer_host/render_view_host_delegate.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_delegate.h"
 #include "content/common/accessibility_mode_enums.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/color_chooser.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_contents.h"
+#include "content/public/browser/web_contents_observer.h"
 #include "content/public/common/page_importance_signals.h"
 #include "content/public/common/renderer_preferences.h"
 #include "content/public/common/resource_type.h"
 #include "content/public/common/three_d_api_types.h"
 #include "net/base/load_states.h"
 #include "net/http/http_response_headers.h"
 #include "third_party/WebKit/public/web/WebDragOperation.h"
 #include "ui/base/page_transition_types.h"
 #include "ui/gfx/geometry/rect_f.h"
 #include "ui/gfx/geometry/size.h"
@@ skipping 17 matching lines @@
 class RenderWidgetHostImpl;
 class RenderWidgetHostInputEventRouter;
 class SavePackage;
 class ScreenOrientationDispatcherHost;
 class SiteInstance;
 class TestWebContents;
 class WakeLockServiceContext;
 class WebContentsAudioMuter;
 class WebContentsDelegate;
 class WebContentsImpl;
-class WebContentsObserver;
 class WebContentsView;
 class WebContentsViewDelegate;
 struct AXEventNotificationDetails;
 struct ColorSuggestion;
 struct FaviconURL;
 struct LoadNotificationDetails;
 struct ResourceRedirectDetails;
 struct ResourceRequestDetails;
 
 #if defined(OS_ANDROID) && !defined(USE_AURA)
@@ skipping 623 matching lines @@
 
   typedef base::Callback<void(WebContents*)> CreatedCallback;
 
   // Forces overscroll to be disabled (used by touch emulation).
   void SetForceDisableOverscrollContent(bool force_disable);
 
   AudioStreamMonitor* audio_stream_monitor() {
     return &audio_stream_monitor_;
   }
 
-  bool has_audio_power_save_blocker_for_testing() const {
-    return audio_power_save_blocker_;
-  }
+  // Called by MediaWebContentsObserver when playback starts or stops.  See the
+  // WebContentsObserver function stubs for more details.
+  void MediaStartedPlaying(const WebContentsObserver::MediaPlayerId& id);
+  void MediaPaused(const WebContentsObserver::MediaPlayerId& id);
 
-  bool has_video_power_save_blocker_for_testing() const {
-    return video_power_save_blocker_;
-  }
-
-#if defined(ENABLE_BROWSER_CDMS)
   MediaWebContentsObserver* media_web_contents_observer() {
     return media_web_contents_observer_.get();
   }
-#endif
 
  private:
   friend class WebContentsObserver;
   friend class WebContents;  // To implement factory methods.
 
   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, NoJSMessageOnInterstitials);
   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, UpdateTitle);
   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest, FindOpenerRVHWhenPending);
   FRIEND_TEST_ALL_PREFIXES(WebContentsImplTest,
                            CrossSiteCantPreemptAfterUnload);
@@ skipping 157 matching lines @@
 
   // Callback function when requesting permission to access the PPAPI broker.
   // |result| is true if permission was granted.
   void OnPpapiBrokerPermissionResult(int routing_id, bool result);
 
   void OnBrowserPluginMessage(RenderFrameHost* render_frame_host,
                               const IPC::Message& message);
 #endif  // defined(ENABLE_PLUGINS)
   void OnUpdateFaviconURL(const std::vector<FaviconURL>& candidates);
   void OnFirstVisuallyNonEmptyPaint();
-  void OnMediaPlayingNotification(int64 player_cookie,
-                                  bool has_video,
-                                  bool has_audio,
-                                  bool is_remote);
-  void OnMediaPausedNotification(int64 player_cookie);
   void OnShowValidationMessage(const gfx::Rect& anchor_in_root_view,
                                const base::string16& main_text,
                                const base::string16& sub_text);
   void OnHideValidationMessage();
   void OnMoveValidationMessage(const gfx::Rect& anchor_in_root_view);
 
   // Called by derived classes to indicate that we're no longer waiting for a
   // response. This won't actually update the throbber, but it will get picked
   // up at the next animation step if the throbber is going.
   void SetNotWaitingForResponse() { waiting_for_response_ = false; }
@@ skipping 67 matching lines @@
 
   void SetEncoding(const std::string& encoding);
 
   // TODO(creis): This should take in a FrameTreeNode to know which node's
   // render manager to return.  For now, we just return the root's.
   RenderFrameHostManager* GetRenderManager() const;
 
   // Removes browser plugin embedder if there is one.
   void RemoveBrowserPluginEmbedder();
 
-  // Clear |render_frame_host|'s tracking entry for its power save blockers.
-  void ClearPowerSaveBlockers(RenderFrameHost* render_frame_host);
-
-  // Clear tracking entries for all RenderFrameHosts, clears
-  // |audio_power_save_blocker_| and |video_power_save_blocker_|.
-  void ClearAllPowerSaveBlockers();
-
-  // Creates an audio or video power save blocker respectively.
-  void CreateAudioPowerSaveBlocker();
-  void CreateVideoPowerSaveBlocker();
-
-  // Releases the audio power save blockers if |active_audio_players_| is empty.
-  // Likewise, releases the video power save blockers if |active_video_players_|
-  // is empty.
-  void MaybeReleasePowerSaveBlockers();
-
   // Helper function to invoke WebContentsDelegate::GetSizeForNewRenderView().
   gfx::Size GetSizeForNewRenderView();
 
   void OnFrameRemoved(RenderFrameHost* render_frame_host);
 
   // Helper method that's called whenever |preferred_size_| or
   // |preferred_size_for_capture_| changes, to propagate the new value to the
   // |delegate_|.
   void OnPreferredSizeChanged(const gfx::Size& old_size);
 
-  // Helper methods for adding or removing player entries in |player_map| under
-  // the key |render_frame_message_source_|.
-  typedef std::vector<int64> PlayerList;
-  typedef std::map<uintptr_t, PlayerList> ActiveMediaPlayerMap;
-  void AddMediaPlayerEntry(int64 player_cookie,
-                           ActiveMediaPlayerMap* player_map);
-  void RemoveMediaPlayerEntry(int64 player_cookie,
-                              ActiveMediaPlayerMap* player_map);
-  // Removes all entries from |player_map| for |render_frame_host|.
-  void RemoveAllMediaPlayerEntries(RenderFrameHost* render_frame_host,
-                                   ActiveMediaPlayerMap* player_map);
-
   // Internal helper to create WebUI objects associated with |this|. |url| is
   // used to determine which WebUI should be created (if any). |frame_name|
   // corresponds to the name of a frame that the WebUI should be created for (or
   // the main frame if empty).
   WebUI* CreateWebUI(const GURL& url, const std::string& frame_name);
 
   // Data for core operation ---------------------------------------------------
 
   // Delegate for notifying our owner about stuff. Not owned by us.
   WebContentsDelegate* delegate_;
@@ skipping 31 matching lines @@
   // True if this tab was opened by another tab. This is not unset if the opener
   // is closed.
   bool created_with_opener_;
 
 #if defined(OS_WIN)
   gfx::NativeViewAccessible accessible_parent_;
 #endif
 
   // Helper classes ------------------------------------------------------------
 
-  // Tracking variables and associated power save blockers for media playback.
-  ActiveMediaPlayerMap active_audio_players_;
-  ActiveMediaPlayerMap active_video_players_;
-  scoped_ptr<PowerSaveBlocker> audio_power_save_blocker_;
-  scoped_ptr<PowerSaveBlocker> video_power_save_blocker_;
-
   // Manages the frame tree of the page and process swaps in each node.
   FrameTree frame_tree_;
 
   // If this WebContents is part of a "tree of WebContents", then this contains
   // information about the structure.
   scoped_ptr<WebContentsTreeNode> node_;
 
   // SavePackage, lazily created.
   scoped_refptr<SavePackage> save_package_;
 
@@ skipping 212 matching lines @@
   AccessibilityMode accessibility_mode_;
 
   // Monitors power levels for audio streams associated with this WebContents.
   AudioStreamMonitor audio_stream_monitor_;
 
   // Created on-demand to mute all audio output from this WebContents.
   scoped_ptr<WebContentsAudioMuter> audio_muter_;
 
   bool virtual_keyboard_requested_;
 
-#if defined(ENABLE_BROWSER_CDMS)
-  // Manages all the media player and CDM managers and forwards IPCs to them.
+  // Manages media players, CDMs, and power save blockers for media.
   scoped_ptr<MediaWebContentsObserver> media_web_contents_observer_;
-#endif
 
   scoped_ptr<RenderWidgetHostInputEventRouter> rwh_input_event_router_;
 
   PageImportanceSignals page_importance_signals_;
 
   bool page_scale_factor_is_one_;
 
   base::WeakPtrFactory<WebContentsImpl> loading_weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsImpl);
@@ skipping 12 matching lines @@
   // Adds/removes a callback called on creation of each new WebContents.
   static void AddCreatedCallbackForTesting(const CreatedCallback& callback);
   static void RemoveCreatedCallbackForTesting(const CreatedCallback& callback);
 
   DISALLOW_COPY_AND_ASSIGN(FriendZone);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_