Bug 55152 does not depend on any bugs.

Bug 55152 blocks 21 bugs:

•    55152: Add RenderMediaControls to Mac build, unduplicate one method. [RESOLVED FIXED; assigned to dglazkov]
  •    53020: [Meta] Convert HTMLMediaElement to use the new shadow DOM [RESOLVED FIXED; assigned to webkit-unassigned]
    •    49027: video controls RenderReplaced::layout() calls setNeedsLayout(false) while its children still need layout [NEW; assigned to webkit-unassigned]
    •    57163: Shadow media control elements should only be created when needed. [NEW; assigned to jer.noble]
    •    58345: [Meta] Make Media Controls Easier To Improve and Customize Across Ports [NEW; assigned to webkit-unassigned]
    •    48698: [Meta] Convert all current instances of shadow DOM to a more natural model. [RESOLVED FIXED; assigned to webkit-unassigned]
      •    52558: ShadowElement::m_shadowParent should be removed [RESOLVED FIXED; assigned to webkit-unassigned]
      •    52962: [Meta] Implement Web Components [RESOLVED WONTFIX; assigned to webkit-unassigned]
      •    59228: Remove IsShadowRootFlag from Node [RESOLVED WONTFIX; assigned to dglazkov]
        •    72352: [meta] Shadow DOM stability, flakiness and other random bugs. [REOPENED; assigned to webkit-unassigned]
          •    63606: [Meta] Implement Shadow DOM [RESOLVED CONFIGURATION CHANGED; assigned to webkit-unassigned]
            •    52962: [Meta] Implement Web Components [RESOLVED WONTFIX; assigned to webkit-unassigned] (*)
            •    67912: [Meta] Shadow DOM should be accessible from JavaScript based assistive technology. [RESOLVED WONTFIX; assigned to webkit-unassigned]
              •    66669: [Meta] Make accessibility features work with component model [RESOLVED FIXED; assigned to webkit-unassigned]
                •    52962: [Meta] Implement Web Components [RESOLVED WONTFIX; assigned to webkit-unassigned] (*)
        •    59802: [Meta] Implement Shadow Content Plumbing [RESOLVED FIXED; assigned to webkit-unassigned]
          •    72352: [meta] Shadow DOM stability, flakiness and other random bugs. [REOPENED; assigned to webkit-unassigned] (*)
          •    63606: [Meta] Implement Shadow DOM [RESOLVED CONFIGURATION CHANGED; assigned to webkit-unassigned] (*)
    •    56573: [Chromium] Expose the shadow DOM to DumpRenderTree JS tests. [RESOLVED FIXED; assigned to webkit-unassigned]
      •    54634: media/video-controls-in-media-document.html has image+text diffs [RESOLVED FIXED; assigned to webkit-unassigned]
    •    58157: Need more efficient ways to set inline CSS styles [RESOLVED FIXED; assigned to dglazkov]
    •    58163: Should MediaControls::changedNetworkState fiddle with Fullscreen controls? [RESOLVED FIXED; assigned to dglazkov]
    •    58250: Rename MediaControls to MediaControlRootElement. [RESOLVED FIXED; assigned to dglazkov]
    •    58347: Move MediaControlElements to html/shadow. [RESOLVED FIXED; assigned to dglazkov]
    •    58952: Media controls status display should not be hidden for live streams [RESOLVED FIXED; assigned to eric.carlson]
  •    55157: Simplify RenderTheme::volumeSliderOffsetFromMuteButton, unduplicate code. [RESOLVED INVALID; assigned to dglazkov]
    •    53020: [Meta] Convert HTMLMediaElement to use the new shadow DOM [RESOLVED FIXED; assigned to webkit-unassigned] (*)