Move //mojo/services/X/public/... to //mojo/services/X/... (part 3).

services/prediction/README.chromium

 PredictionService interface provides only one function GetPredictionList 
 which takes infos about previous words and current word (format details in 
-mojo/services/prediction/public/interfaces/prediction.mojom). 
+mojo/services/prediction/interfaces/prediction.mojom). 
 Connect to "mojo:prediction_service" to use the service.
 
 Description of each class:
 res/main_en.dict.sha1 is the sha1 of main_en.dict (from Android 
 packages/inputmethods/LatinIME/java/res/raw/main_en.dict).
 main_en.dict is the binary form of English dictionary 
 packages/inputmethods/LatinIME/dictionaries/en_wordlist.combined.gz
 of the form
 packages/inputmethods/LatinIME/java/src/com/android/inputmethod
 /latin/makedict/FormatSpec.java.
 
 DictionaryService creates a latinime::DictionaryStructureWithBufferPolicy
 from our dictionary file and prepares parameters (current word processed by
 InputInfo) for getSuggestions if current word is not empty or getPredictions if
 current word is empty (currently not working due to lack of ngram binary 
 dictionary) from latinime::DictionaryStructureWithBufferPolicy. After it 
 processes the prediction words array, it returns that to PredictionServiceImpl
 which then returns back to the client.
 
 ProximityInfoFactory, TouchPositionCorrection and KeySet provide proximity 
 info of the keys. TouchPositionCorrection and KeySet are hardcoded English 
 QWERTY keyboard values because PredictionService can't get these keyboard 
 values from anywhere for now. 
 
 TODO:
 Add a bigram/ngram binary dictionary. Shouldn't need to change any other code
 if the dictionary is of the same format as main_en.dict. If not, might need to
 update third_party/android_prediction to the latest version.