Revert 88309 - Introduced additional spellcheck related histograms.

chrome/browser/spellcheck_host_impl.cc

Index: chrome/browser/spellcheck_host_impl.cc
===================================================================
--- chrome/browser/spellcheck_host_impl.cc	(revision 88455)
+++ chrome/browser/spellcheck_host_impl.cc	(working copy)
@@ -91,7 +91,6 @@
       request_context_getter_(request_context_getter),
       misspelled_word_count_(0),
       spellchecked_word_count_(0),
-      suggestion_count_(0),
       replaced_word_count_(0) {
   DCHECK(observer_);
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
@@ -316,30 +315,16 @@
   UMA_HISTOGRAM_PERCENTAGE("SpellCheck.MisspellRatio", percentage);
 }
 
-void SpellCheckHostImpl::RecordDictionaryCorruptionStats(bool corrupted) {
-  UMA_HISTOGRAM_BOOLEAN("SpellCheck.DictionaryCorrupted", corrupted);
-}
-
-void SpellCheckHostImpl::RecordSuggestionStats(int delta) {
-  suggestion_count_ += delta;
-  RecordReplacedWordStats(0);
-}
-
 void SpellCheckHostImpl::RecordReplacedWordStats(int delta) {
   replaced_word_count_ += delta;
-
-  if (misspelled_word_count_) {
-    // zero |misspelled_word_count_| is possible when an extension
-    // gives the misspelling, which is not recorded as a part of this
-    // metrics.
-    int percentage = (100 * replaced_word_count_) / misspelled_word_count_;
-    UMA_HISTOGRAM_PERCENTAGE("SpellCheck.ReplaceRatio", percentage);
+  if (!misspelled_word_count_) {
+    // This is possible when an extension gives the misspelling,
+    // which is not recorded as a part of this metrics.
+    return;
   }
 
-  if (suggestion_count_) {
-    int percentage = (100 * replaced_word_count_) / suggestion_count_;
-    UMA_HISTOGRAM_PERCENTAGE("SpellCheck.SuggestionHitRatio", percentage);
-  }
+  int percentage = (100 * replaced_word_count_) / misspelled_word_count_;
+  UMA_HISTOGRAM_PERCENTAGE("SpellCheck.ReplaceRatio", percentage);
 }
 
 void SpellCheckHostImpl::OnURLFetchComplete(const URLFetcher* source,
@@ -387,9 +372,7 @@
 
   // To prevent corrupted dictionary data from causing a renderer crash, scan
   // the dictionary data and verify it is sane before save it to a file.
-  bool verified = hunspell::BDict::Verify(data_.data(), data_.size());
-  RecordDictionaryCorruptionStats(!verified);
-  if (!verified) {
+  if (!hunspell::BDict::Verify(data_.data(), data_.size())) {
     LOG(ERROR) << "Failure to verify the downloaded dictionary.";
     BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
         NewRunnableMethod(this,