[Picture in Picture] Show correct media controls on window open.

Currently, the initial media control state for play/pause is incorrect.
It shows the opposite control than intended.

Tests forthcoming in a future patch once we have test infrastructure
set up.

BUG: 836389
Change-Id: Ie7be9bfb384f62ac925d6cb1c1ee30cc6baf2cfc
Reviewed-on: https://chromium-review.googlesource.com/1060244Reviewed-by: Becca Hughes <beccahughes@chromium.org>
Commit-Queue: apacible <apacible@chromium.org>
Cr-Commit-Position: refs/heads/master@{#558894}

chrome/browser/ui/views/overlay/overlay_window_views.cc

@@ -214,7 +214,7 @@ void OverlayWindowViews::SetUpViews() {
                             kPlayPauseIconSize.width(), SK_ColorWHITE);
   play_pause_controls_view_->SetToggledImage(views::Button::STATE_NORMAL,
                                              &pause_icon);
-  play_pause_controls_view_->SetToggled(controller_->IsPlayerActive());
+  play_pause_controls_view_->SetToggled(!controller_->IsPlayerActive());
 
   // Paint to ui::Layers to use in the OverlaySurfaceEmbedder.
   video_view_->SetPaintToLayer(ui::LAYER_TEXTURED);