Remove javaEnabled setting.

Source/core/frame/Settings.in

 # Defines properties which are available on the Settings object.
 #
 # Please think carefully before adding a new Setting.  Some questions to
 # consider are:
 # - Should this be a RuntimeEnabledFeature instead? Settings are for things
 #   which we support either values of at runtime.  Features are set at renderer
 #   process startup and are never changed. Features also tend to be set to a
 #   value based on the platform or the stability of the code in question, where
 #   as settings both codepaths need to be stable.
 # - How will you ensure test coverage of all relevant values of your setting?
@@ skipping 248 matching lines @@
 # Number of outstanding and pending tokens allowed in the background HTML
 # parser. A value of 0 indicates the parser should use its default value.
 backgroundHtmlParserOutstandingTokenLimit type=unsigned, initial=0
 backgroundHtmlParserPendingTokenLimit type=unsigned, initial=0
 
 # Html preload scanning is a fast, early scan of HTML documents to find loadable
 # resources before the parser advances to them. If it is disabled, resources will
 # be loaded later.
 doHtmlPreloadScanning initial=true
 
-javaEnabled initial=false
 pluginsEnabled initial=false
 
 viewportEnabled initial=false, invalidate=ViewportDescription
 viewportMetaEnabled initial=false
 
 dnsPrefetchingEnabled initial=false, invalidate=DNSPrefetching
 
 # FIXME: This is a temporary flag and should be removed
 # when squashing is ready. (crbug.com/261605)
 layerSquashingEnabled initial=false
@@ skipping 88 matching lines @@
 # Overall rationale and details here: https://docs.google.com/document/d/1bCDuq9H1ih9iNjgzyAL0gpwNFiEP4TZS-YLRp_RuMlc/edit?usp=sharing
 fetchDeferLateScripts initial=false
 fetchIncreaseFontPriority initial=false
 fetchIncreaseAsyncScriptPriority initial=false
 # Increases the priorities for CSS, Scripts, Fonts and Images all by one level
 # and parser-blocking scripts and visible images by 2.
 # This is used in conjunction with logic on the Chrome side to raise the threshold
 # of "layout-blocking" resources and provide a boost to resources that are needed
 # as soon as possible for something currently on the screen.
 fetchIncreasePriorities initial=false