Webkit setting for embedders that do not support fullscreen.

Source/core/frame/Settings.in

Index: Source/core/frame/Settings.in
diff --git a/Source/core/frame/Settings.in b/Source/core/frame/Settings.in
index 2215ed15e2e62e75e9422ff81d40c1e3ee3a2c98..ca0bdf3a00788300fd6069ecefcf2c7c4005c5ba 100644
--- a/Source/core/frame/Settings.in
+++ b/Source/core/frame/Settings.in
@@ -269,3 +269,16 @@ deviceScaleAdjustment type=double, initial=1.0, invalidate=TextAutosizing
 # API will return 'false' in that case.
 maxBeaconTransmission type=int, initial=16384
 
+# This value is set to false if the platform does not support fullscreen.
+# When set to false all the requests to enter fullscreen will return an error
+# (fullscreenerror or webkitfullscreenerror) as specified in the standard:
+# http://fullscreen.spec.whatwg.org/#dom-element-requestfullscreen
+fullscreenSupported initial=true
+
+# FIXME: This is a temporary flag and should be removed once
+# the Android WebView framework supports fullscreen for non-media elements
+# (crbug.com/398485).
+# This value is set to false if the platform does not support fullscreen
+# for non-media elements. When set to true all the requests to enter fullscreen
+# on non-media elements will return an error.
+disallowFullscreenForNonMediaElements initial=false