Don't show video fullscreen until DidEnterFullscreen() is called, and disable fullscreen for non-me…

Source/web/WebSettingsImpl.cpp

Index: Source/web/WebSettingsImpl.cpp
diff --git a/Source/web/WebSettingsImpl.cpp b/Source/web/WebSettingsImpl.cpp
index be306879779080c1174cd123c59ed2e11a2b8bc0..77530a5befebaef534d46b5d68598cbed92ec5b3 100644
--- a/Source/web/WebSettingsImpl.cpp
+++ b/Source/web/WebSettingsImpl.cpp
@@ -59,6 +59,7 @@ WebSettingsImpl::WebSettingsImpl(Settings* settings, InspectorController* inspec
     , m_viewportMetaNonUserScalableQuirk(false)
     , m_clobberUserAgentInitialScaleQuirk(false)
     , m_mainFrameResizesAreOrientationChanges(false)
+    , m_disallowFullscreenForNonMediaElements(false)
 {
     ASSERT(settings);
 }
@@ -711,4 +712,9 @@ void WebSettingsImpl::setMainFrameResizesAreOrientationChanges(bool enabled)
     m_mainFrameResizesAreOrientationChanges = enabled;
 }
 
+void WebSettingsImpl::setDisallowFullscreenForNonMediaElements(bool enabled)
+{
+    m_disallowFullscreenForNonMediaElements = enabled;
+}
+
 } // namespace blink