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

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

Index: third_party/WebKit/Source/modules/media_controls/MediaControlsImpl.cpp
diff --git a/third_party/WebKit/Source/modules/media_controls/MediaControlsImpl.cpp b/third_party/WebKit/Source/modules/media_controls/MediaControlsImpl.cpp
index 9bf2b7bd75b07965ea592663da13bd45c8245d39..004bc52c19bfd848b3d3945614acdc3e23bd9dd1 100644
--- a/third_party/WebKit/Source/modules/media_controls/MediaControlsImpl.cpp
+++ b/third_party/WebKit/Source/modules/media_controls/MediaControlsImpl.cpp
@@ -643,6 +643,15 @@ bool MediaControlsImpl::ShouldHideMediaControls(unsigned behavior_flags) const {
   if (text_track_list_->IsWanted() || overflow_list_->IsWanted())
     return false;
 
+  // Don't hide the media controls while the in product help is showing.
+  if (MediaElement().GetDocument().GetFrame() &&
+      MediaElement()
+          .GetDocument()
+          .GetFrame()
+          ->IsDownloadMediaInProductHelpVisibleForElement(MediaElement())) {
+    return false;
+  }
+
   return true;
 }
 
@@ -971,6 +980,7 @@ void MediaControlsImpl::OnPlay() {
   UpdatePlayState();
   timeline_->SetPosition(MediaElement().currentTime());
   UpdateCurrentTimeDisplay();
+  MaybeDispatchDownloadIPHTrigger();
 }
 
 void MediaControlsImpl::OnPlaying() {
@@ -1216,6 +1226,31 @@ void MediaControlsImpl::HideAllMenus() {
     text_track_list_->SetVisible(false);
 }
 
+void MediaControlsImpl::MaybeDispatchDownloadIPHTrigger() {
+  if (download_button_->IsWanted() && !MediaElement().paused() &&
+      MediaElement().GetDocument().GetFrame()) {
+    MediaElement().GetDocument().GetFrame()->ShowDownloadMediaInProductHelp(
+        MediaElement());
+    if (!ShouldHideMediaControls())
+      MaybeShow();
+  }
+}
+
+bool MediaControlsImpl::GetDownloadButtonRect(IntRect& rect) {
+  if (!IsVisible())
+    return false;
+  if (!download_button_->IsWanted())
+    return false;
+
+  rect = download_button_->VisibleBoundsInVisualViewport();
+  return true;
+}
+
+void MediaControlsImpl::InProductHelpDisabled() {
+  if (ShouldHideMediaControls())
+    StartHideMediaControlsTimer();
+}
+
 DEFINE_TRACE(MediaControlsImpl) {
   visitor->Trace(element_mutation_callback_);
   visitor->Trace(resize_observer_);