Spellcheck : Fix caching in cases where text is deleted.

components/spellcheck/renderer/BUILD.gn

 # Copyright 2016 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//components/spellcheck/spellcheck_build_features.gni")
 
 source_set("renderer") {
   sources = [
     "custom_dictionary_engine.cc",
     "custom_dictionary_engine.h",
@@ skipping 45 matching lines @@
   if (is_win) {
     cflags = [ "/wd4267" ]  # conversion from 'size_t' to 'int' on x64 (crbug.com/633312)
   }
 }
 
 source_set("unit_tests") {
   testonly = true
   sources = [
     "custom_dictionary_engine_unittest.cc",
     "spellcheck_multilingual_unittest.cc",
+    "spellcheck_provider_cache_unittest.cc",
     "spellcheck_provider_hunspell_unittest.cc",
     "spellcheck_provider_mac_unittest.cc",
     "spellcheck_provider_test.cc",
     "spellcheck_provider_test.h",
     "spellcheck_unittest.cc",
     "spellcheck_worditerator_unittest.cc",
   ]
   data = [
     "//third_party/hunspell_dictionaries/",
   ]
@@ skipping 25 matching lines @@
   ]
 
   if (is_mac && !is_ios) {
     deps += [ "//third_party/hunspell" ]
   }
 
   if (is_win) {
     cflags = [ "/wd4267" ]  # conversion from 'size_t' to 'int' on x64 (crbug.com/633312)
   }
 }