chrome/blink: Add functionality for in-product help for media elements.

third_party/WebKit/Source/modules/media_controls/MediaControlsImpl.h

Index: third_party/WebKit/Source/modules/media_controls/MediaControlsImpl.h
diff --git a/third_party/WebKit/Source/modules/media_controls/MediaControlsImpl.h b/third_party/WebKit/Source/modules/media_controls/MediaControlsImpl.h
index 0860681fc0609e3cd7c8c200d1f83bf9e697699b..3259f31229c00cf9aa82c916a3b586420d87ea72 100644
--- a/third_party/WebKit/Source/modules/media_controls/MediaControlsImpl.h
+++ b/third_party/WebKit/Source/modules/media_controls/MediaControlsImpl.h
@@ -56,6 +56,7 @@ class MediaControlTextTrackListElement;
 class MediaControlTimelineElement;
 class MediaControlToggleClosedCaptionsButtonElement;
 class MediaControlVolumeSliderElement;
+class MediaDownloadInProductHelpManager;
 class ShadowRoot;
 
 // Default implementation of the core/ MediaControls interface used by
@@ -116,6 +117,11 @@ class MODULES_EXPORT MediaControlsImpl final : public HTMLDivElement,
   void EndScrubbing();
   void UpdateCurrentTimeDisplay();
 
+  // Methods used for Download In-product help.
+  const MediaControlDownloadButtonElement& DownloadButton() const;
+  void DidDismissDownloadInProductHelp();
+  MediaDownloadInProductHelpManager* DownloadInProductHelp();
+
   DECLARE_VIRTUAL_TRACE();
 
  private:
@@ -134,6 +140,7 @@ class MODULES_EXPORT MediaControlsImpl final : public HTMLDivElement,
   friend class MediaControlsOrientationLockAndRotateToFullscreenDelegateTest;
   friend class MediaControlsRotateToFullscreenDelegateTest;
   friend class MediaControlsImplTest;
+  friend class MediaControlsImplInProductHelpTest;
 
   // Need to be members of MediaControls for private member access.
   class BatchedControlUpdate;
@@ -165,6 +172,7 @@ class MODULES_EXPORT MediaControlsImpl final : public HTMLDivElement,
 
   bool ShouldHideMediaControls(unsigned behavior_flags = 0) const;
   void HideMediaControlsTimerFired(TimerBase*);
+  void StartHideMediaControlsIfNecessary();
   void StartHideMediaControlsTimer();
   void StopHideMediaControlsTimer();
   void ResetHideMediaControlsTimer();
@@ -206,6 +214,8 @@ class MODULES_EXPORT MediaControlsImpl final : public HTMLDivElement,
   void OnPanelKeypress();
   void OnMediaKeyboardEvent(Event* event) { DefaultEventHandler(event); }
 
+  void CreateDownloadInProductHelp();
+
   // Media control elements.
   Member<MediaControlOverlayEnclosureElement> overlay_enclosure_;
   Member<MediaControlOverlayPlayButtonElement> overlay_play_button_;
@@ -251,6 +261,8 @@ class MODULES_EXPORT MediaControlsImpl final : public HTMLDivElement,
   IntSize size_;
 
   bool keep_showing_until_timer_fires_ : 1;
+
+  Member<MediaDownloadInProductHelpManager> download_iph_manager_;
 };
 
 DEFINE_ELEMENT_TYPE_CASTS(MediaControlsImpl, IsMediaControls());