New media playback UI.

Source/core/html/shadow/MediaControlElementTypes.cpp

Index: Source/core/html/shadow/MediaControlElementTypes.cpp
diff --git a/Source/core/html/shadow/MediaControlElementTypes.cpp b/Source/core/html/shadow/MediaControlElementTypes.cpp
index 70d738556f731e1bee57b58bf0f4ca9d2a611bc1..1e42a826408b4daaf356898c3d3922cfeec9fb76 100644
--- a/Source/core/html/shadow/MediaControlElementTypes.cpp
+++ b/Source/core/html/shadow/MediaControlElementTypes.cpp
@@ -71,6 +71,8 @@ MediaControlElement::MediaControlElement(MediaControls& mediaControls, MediaCont
     : m_mediaControls(mediaControls)
     , m_displayType(displayType)
     , m_element(element)
+    , m_isShown(true)
+    , m_isWanted(true)
 {
 }
 
@@ -82,11 +84,48 @@ HTMLMediaElement& MediaControlElement::mediaElement() const
 void MediaControlElement::hide()
 {
     m_element->setInlineStyleProperty(CSSPropertyDisplay, CSSValueNone);
+    m_isShown = false;
 }
 
 void MediaControlElement::show()
 {
     m_element->removeInlineStyleProperty(CSSPropertyDisplay);
+    m_isShown = true;
+}
+
+bool MediaControlElement::isShown()
+{
+    return m_isShown;
+}
+
+void MediaControlElement::want()
+{
+    m_isWanted = true;
+    show();
+}
+
+void MediaControlElement::dontWant()
+{
+    m_isWanted = false;
+    hide();
+}
+
+bool MediaControlElement::isWanted()
+{
+    return m_isWanted;
+}
+
+int MediaControlElement::minimumWidth()
+{
+    int minWidthInPixels = 48;

[philipj_slow, 2015/07/08 15:06:38]

Not sure the local variable explains much in such a short method, just returning
the values seems OK.

[liberato (no reviews please), 2015/07/09 12:10:56]

Done.

+
+    // We could check the computed style here, but that depends on whether
+    // we've been shown.  Instead, we just memorize 48 except for the

[philipj_slow, 2015/07/08 15:06:38]

Not sure what "memorize" means here, maybe "assume"?

[liberato (no reviews please), 2015/07/09 12:10:56]

Done.

+    // timeline bar.
+    if (m_displayType == MediaSlider)
+        minWidthInPixels = 55;
+
+    return minWidthInPixels;
 }
 
 void MediaControlElement::setDisplayType(MediaControlElementType displayType)