Remove spellcheck feedback.

To be resurrected when the server is ready to process the feedback.
There's not ETA.

BUG=170514

Review URL: https://codereview.chromium.org/856183002

Cr-Commit-Position: refs/heads/master@{#312491}

chrome/app/generated_resources.grd

@@ -14292,14 +14292,6 @@ Do you accept?
         The Simple Cache for HTTP is a new cache. It relies on the filesystem for disk space allocation.
       </message>
 
-      <!-- Spelling feedback field trial. -->
-      <message name="IDS_FLAGS_ENABLE_SPELLING_FEEDBACK_FIELD_TRIAL_NAME" desc="Name of about:flags option to enable the field trial for sending feedback to spelling service.">
-        Spelling Feedback Field Trial.
-      </message>
-      <message name="IDS_FLAGS_ENABLE_SPELLING_FEEDBACK_FIELD_TRIAL_DESCRIPTION" desc="Description of about:flags option to enable the field trial for sending feedback to spelling service.">
-        Enable the field trial for sending user feedback to spelling service.
-      </message>
-
       <!-- Web MIDI API. -->
       <message name="IDS_FLAGS_ENABLE_WEB_MIDI_NAME"
                desc="Name of about:flag option to turn on Web MIDI API">

chrome/browser/about_flags.cc

@@ -1366,15 +1366,6 @@ const Experiment kExperiments[] = {
     kOsAll,
     MULTI_VALUE_TYPE(kTabCaptureDownscaleQualityChoices)
   },
-#endif
-#if defined(ENABLE_SPELLCHECK)
-  {
-    "enable-spelling-feedback-field-trial",
-    IDS_FLAGS_ENABLE_SPELLING_FEEDBACK_FIELD_TRIAL_NAME,
-    IDS_FLAGS_ENABLE_SPELLING_FEEDBACK_FIELD_TRIAL_DESCRIPTION,
-    kOsAll,
-    SINGLE_VALUE_TYPE(switches::kEnableSpellingFeedbackFieldTrial)
-  },
 #endif
   {
     "enable-webgl-draft-extensions",

chrome/browser/renderer_context_menu/spelling_menu_observer.cc

@@ -37,7 +37,6 @@ SpellingMenuObserver::SpellingMenuObserver(RenderViewContextMenuProxy* proxy)
     : proxy_(proxy),
       loading_frame_(0),
       succeeded_(false),
-      misspelling_hash_(0),
       client_(new SpellingServiceClient) {
   if (proxy_ && proxy_->GetBrowserContext()) {
     Profile* profile = Profile::FromBrowserContext(proxy_->GetBrowserContext());
@@ -68,7 +67,6 @@ void SpellingMenuObserver::InitMenu(const content::ContextMenuParams& params) {
 
   suggestions_ = params.dictionary_suggestions;
   misspelled_word_ = params.misspelled_word;
-  misspelling_hash_ = params.misspelling_hash;
 
   bool use_suggestions = SpellingServiceClient::IsAvailable(
       browser_context, SpellingServiceClient::SUGGEST);
@@ -258,8 +256,6 @@ void SpellingMenuObserver::ExecuteCommand(int command_id) {
       if (spellcheck) {
         if (spellcheck->GetMetrics())
           spellcheck->GetMetrics()->RecordReplacedWordStats(1);
-        spellcheck->GetFeedbackSender()->SelectedSuggestion(
-            misspelling_hash_, suggestion_index);
       }
     }
     return;
@@ -284,7 +280,6 @@ void SpellingMenuObserver::ExecuteCommand(int command_id) {
       if (spellcheck) {
         spellcheck->GetCustomDictionary()->AddWord(base::UTF16ToUTF8(
             misspelled_word_));
-        spellcheck->GetFeedbackSender()->AddedToDictionary(misspelling_hash_);
       }
     }
 #if defined(OS_MACOSX)
@@ -347,17 +342,6 @@ void SpellingMenuObserver::ExecuteCommand(int command_id) {
   }
 }
 
-void SpellingMenuObserver::OnMenuCancel() {
-  content::BrowserContext* browser_context = proxy_->GetBrowserContext();
-  if (!browser_context)
-    return;
-  SpellcheckService* spellcheck =
-      SpellcheckServiceFactory::GetForContext(browser_context);
-  if (!spellcheck)
-    return;
-  spellcheck->GetFeedbackSender()->IgnoredSuggestions(misspelling_hash_);
-}
-
 void SpellingMenuObserver::OnTextCheckComplete(
     SpellingServiceClient::ServiceType type,
     bool success,

chrome/browser/renderer_context_menu/spelling_menu_observer.h

@@ -48,7 +48,6 @@ class SpellingMenuObserver : public RenderViewContextMenuObserver {
   bool IsCommandIdChecked(int command_id) override;
   bool IsCommandIdEnabled(int command_id) override;
   void ExecuteCommand(int command_id) override;
-  void OnMenuCancel() override;
 
   // A callback function called when the Spelling service finishes checking a
   // misspelled word.
@@ -88,10 +87,6 @@ class SpellingMenuObserver : public RenderViewContextMenuObserver {
   // this word to the custom-word dictionary.
   base::string16 misspelled_word_;
 
-  // The hash identifier for the misspelled word. Used for collecting user
-  // feedback to spellcheck suggestions.
-  uint32 misspelling_hash_;
-
   // The string representing the result of this call. This string is a
   // suggestion when this call finished successfully. Otherwise it is error
   // text. Until we receive a response from the Spelling service, this string