Adding overflow menu to media player

third_party/WebKit/Source/core/html/shadow/MediaControlElementTypes.h

Index: third_party/WebKit/Source/core/html/shadow/MediaControlElementTypes.h
diff --git a/third_party/WebKit/Source/core/html/shadow/MediaControlElementTypes.h b/third_party/WebKit/Source/core/html/shadow/MediaControlElementTypes.h
index 00241eaa3a8da837ba4c7d414a5c48dd5d1ee306..8ba41a078841865e3b2c6569b76baa60c57b6564 100644
--- a/third_party/WebKit/Source/core/html/shadow/MediaControlElementTypes.h
+++ b/third_party/WebKit/Source/core/html/shadow/MediaControlElementTypes.h
@@ -34,6 +34,7 @@
 #include "core/html/HTMLDivElement.h"
 #include "core/html/HTMLInputElement.h"
 #include "core/layout/LayoutBlock.h"
+#include "public/platform/WebLocalizedString.h"
 
 namespace blink {
 
@@ -67,6 +68,8 @@ enum MediaControlElementType {
     MediaCastOnButton,
     MediaOverlayCastOffButton,
     MediaOverlayCastOnButton,
+    MediaOverflowButton,
+    MediaOverflowList,
 };
 
 CORE_EXPORT const HTMLMediaElement* toParentMediaElement(const Node*);
@@ -89,6 +92,21 @@ public:
 
     MediaControlElementType displayType() const { return m_displayType; }
 
+    // By default, media controls elements are not added to the overflow menu.
+    // Controls that can be added to the overflow menu should override this
+    // function and return true.
+    virtual bool hasOverflowButton() { return false; }
+
+    // If true, shows the overflow menu item if it exists. Hides it if false.
+    void shouldShowButtonInOverflowMenu(bool);
+
+    // Returns a string representation of the media control element. Used for
+    // the overflow menu.
+    String getOverflowMenuString();
+
+    // Updates the value of the Text string shown in the overflow menu.
+    void updateOverflowString();
+
     DECLARE_VIRTUAL_TRACE();
 
 protected:
@@ -103,11 +121,29 @@ protected:
 
     void setDisplayType(MediaControlElementType);
 
+    // Represents the overflow menu element for this media control.
+    // The Element contains the button that the user can click on, but having
+    // the button within an Element enables us to style the overflow menu.
+    // Setting this pointer is optional so it may be null.
+    Member<Element> m_overflowMenuElement;
+
+    // The text representation of the button within the overflow menu.
+    Member<Text> m_overflowMenuText;
+
 private:
     // Hide or show based on our fits / wanted state.  We want to show
     // if and only if we're wanted and we fit.
     void updateShownState();
 
+    // Returns a string representation of the media control element.
+    // Subclasses should override this method to return the string representation
+    // of the overflow button.
+    virtual WebLocalizedString::Name getOverflowStringName()
+    {
+        NOTREACHED();
+        return WebLocalizedString::AXAMPMFieldText;
+    }
+
     Member<MediaControls> m_mediaControls;
     MediaControlElementType m_displayType;
     Member<HTMLElement> m_element;
@@ -136,6 +172,9 @@ class MediaControlInputElement : public HTMLInputElement, public MediaControlEle
 public:
     DECLARE_VIRTUAL_TRACE();
 
+    // Creates an overflow menu element with the given button as a child.
+    HTMLElement* createOverflowElement(MediaControls&, MediaControlInputElement*);
+
 protected:
     MediaControlInputElement(MediaControls&, MediaControlElementType);
 
@@ -143,6 +182,9 @@ private:
     virtual void updateDisplayType() { }
     bool isMediaControlElement() const final { return true; }
     bool isMouseFocusable() const override;
+
+    // Creates an overflow menu HTML element.
+    virtual MediaControlInputElement* createOverflowButton(MediaControls&) { return nullptr; }
 };
 
 // ----------------------------