Video Player: Change error string when casting

BUG=405860
TEST=manual

Review URL: https://codereview.chromium.org/545233002

Cr-Commit-Position: refs/heads/master@{#293705}

chrome/app/chromeos_strings.grdp

@@ -948,6 +948,9 @@ Press any key to continue exploring.
   <message name="IDS_VIDEO_PLAYER_PLAY_ON" desc="Message is shown above the list of cast devices. The user will select one of them to play the current video on selected device.">
     Play on
   </message>
+  <message name="IDS_VIDEO_PLAYER_VIDEO_FILE_UNSUPPORTED_FOR_CAST" desc="Error message which is shown when the video which an user tried to play is not supported by the current cast device.">
+    Sorry, this video is not supported by your cast device.
+  </message>
 
 <!-- Imageburn Strings -->
   <message name="IDS_CHECKING_FOR_UPDATES" desc="Notification for checking for update">

chrome/browser/chromeos/extensions/file_manager/private_api_strings.cc

@@ -523,6 +523,8 @@ bool FileBrowserPrivateGetStringsFunction::RunSync() {
              IDS_VIDEO_PLAYER_PLAY_THIS_COMPUTER);
   SET_STRING("VIDEO_PLAYER_PLAYING_ON", IDS_VIDEO_PLAYER_PLAYING_ON);
   SET_STRING("VIDEO_PLAYER_PLAY_ON", IDS_VIDEO_PLAYER_PLAY_ON);
+  SET_STRING("VIDEO_PLAYER_VIDEO_FILE_UNSUPPORTED_FOR_CAST",
+             IDS_VIDEO_PLAYER_VIDEO_FILE_UNSUPPORTED_FOR_CAST);
 #undef SET_STRING
 
   dict->SetBoolean("PDF_VIEW_ENABLED",

ui/file_manager/video_player/js/video_player.js

@@ -22,6 +22,8 @@ function FullWindowVideoControls(
   this.playerContainer_ = playerContainer;
   this.decodeErrorOccured = false;
 
+  this.casting = false;
+
   this.updateStyle();
   window.addEventListener('resize', this.updateStyle.wrap(this));
   document.addEventListener('keydown', function(e) {
@@ -107,7 +109,10 @@ FullWindowVideoControls.prototype.showErrorMessage = function(message) {
 FullWindowVideoControls.prototype.onPlaybackError_ = function(error) {
   if (error.target && error.target.error &&
       error.target.error.code === MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED) {
-    this.showErrorMessage('GALLERY_VIDEO_ERROR');
+    if (this.casting)
+      this.showErrorMessage('VIDEO_PLAYER_VIDEO_FILE_UNSUPPORTED_FOR_CAST');
+    else
+      this.showErrorMessage('GALLERY_VIDEO_ERROR');
     this.decodeErrorOccured = false;
   } else {
     this.showErrorMessage('GALLERY_VIDEO_DECODING_ERROR');
@@ -301,6 +306,7 @@ VideoPlayer.prototype.loadVideo_ = function(video, opt_callback) {
     document.querySelector('#error').removeAttribute('visible');
     this.controls.inactivityWatcher.disabled = true;
     this.controls.decodeErrorOccured = false;
+    this.controls.casting = !!this.currentCast_;
 
     videoPlayerElement.setAttribute('loading', true);