Bug 28125 - Prevent non-Necko network connections

...le/android/base/java/org/mozilla/gecko/SuggestClient.java

...ivitystream/homepanel/topstories/PocketStoriesLoader.java

...ase/java/org/mozilla/gecko/distribution/Distribution.java

...e/android/base/java/org/mozilla/gecko/dlc/BaseAction.java

...android/base/java/org/mozilla/gecko/home/ImageLoader.java

...e/java/org/mozilla/gecko/icons/loader/IconDownloader.java

...se/java/org/mozilla/gecko/search/SearchEngineManager.java

.../base/java/org/mozilla/gecko/switchboard/SwitchBoard.java

.../java/org/mozilla/gecko/media/GeckoMediaDrmBridgeV21.java

...le/android/exoplayer2/upstream/DefaultHttpDataSource.java

...zilla/mozstumbler/service/utils/AbstractCommunicator.java