Remove MediaControlVolumeSliderElement::m_clearMutedOnUserInteraction

It is always set to true.

Also drop the volume change check, since HTMLMediaElement::setVolume()
and MediaController::setVolume() already do that.

BUG=341813

Review URL: https://codereview.chromium.org/177423011

git-svn-id: svn://svn.chromium.org/blink/trunk@168438 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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

@@ -157,7 +157,6 @@ void MediaControlMuteButtonElement::updateDisplayType()
 
 MediaControlVolumeSliderElement::MediaControlVolumeSliderElement(Document& document)
     : MediaControlInputElement(document, MediaVolumeSlider)
-    , m_clearMutedOnUserInteraction(false)
 {
 }
 
@@ -176,9 +175,7 @@ void MediaControlVolumeSliderElement::defaultEventHandler(Event* event)
         return;
 
     double volume = value().toDouble();
-    if (volume != mediaController()->volume())
     mediaController()->setVolume(volume, ASSERT_NO_EXCEPTION);
-    if (m_clearMutedOnUserInteraction)
     mediaController()->setMuted(false);
 }
 
@@ -204,9 +201,4 @@ void MediaControlVolumeSliderElement::setVolume(double volume)
         setValue(String::number(volume));
 }
 
-void MediaControlVolumeSliderElement::setClearMutedOnUserInteraction(bool clearMute)
-{
-    m_clearMutedOnUserInteraction = clearMute;
-}
-
 } // namespace WebCore

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

@@ -151,15 +151,11 @@ public:
     virtual bool willRespondToMouseMoveEvents() OVERRIDE;
     virtual bool willRespondToMouseClickEvents() OVERRIDE;
     void setVolume(double);
-    void setClearMutedOnUserInteraction(bool);
 
 protected:
     explicit MediaControlVolumeSliderElement(Document&);
 
     virtual void defaultEventHandler(Event*) OVERRIDE;
-
-private:
-    bool m_clearMutedOnUserInteraction;
 };
 
 } // namespace WebCore

third_party/WebKit/Source/core/html/shadow/MediaControls.cpp

@@ -116,7 +116,6 @@ bool MediaControls::initializeControls(Document& document)
 
     RefPtr<MediaControlPanelVolumeSliderElement> slider = MediaControlPanelVolumeSliderElement::create(document);
     m_volumeSlider = slider.get();
-    m_volumeSlider->setClearMutedOnUserInteraction(true);
     panel->appendChild(slider.release(), exceptionState);
     if (exceptionState.hadException())
         return false;