Remove Cookie.TimeGet

BUG=429300

Review URL: https://codereview.chromium.org/726933002

Cr-Commit-Position: refs/heads/master@{#305019}

net/cookies/cookie_monster.cc

@@ -1319,16 +1319,12 @@ std::string CookieMonster::GetCookiesWithOptions(const GURL& url,
   if (!HasCookieableScheme(url))
     return std::string();
 
-  TimeTicks start_time(TimeTicks::Now());
-
   std::vector<CanonicalCookie*> cookies;
   FindCookiesForHostAndDomain(url, options, true, &cookies);
   std::sort(cookies.begin(), cookies.end(), CookieSorter);
 
   std::string cookie_line = BuildCookieLine(cookies);
 
-  histogram_time_get_->AddTime(TimeTicks::Now() - start_time);
-
   VLOG(kVlogGetCookies) << "GetCookies() result: " << cookie_line;
 
   return cookie_line;
@@ -2245,9 +2241,6 @@ void CookieMonster::InitializeHistograms() {
       base::Histogram::kUmaTargetedHistogramFlag);
 
   // From UMA_HISTOGRAM_{CUSTOM_,}TIMES
-  histogram_time_get_ = base::Histogram::FactoryTimeGet("Cookie.TimeGet",
-      base::TimeDelta::FromMilliseconds(1), base::TimeDelta::FromMinutes(1),
-      50, base::Histogram::kUmaTargetedHistogramFlag);
   histogram_time_blocked_on_load_ = base::Histogram::FactoryTimeGet(
       "Cookie.TimeBlockedOnLoad",
       base::TimeDelta::FromMilliseconds(1), base::TimeDelta::FromMinutes(1),

net/cookies/cookie_monster.h

@@ -635,7 +635,6 @@ class NET_EXPORT CookieMonster : public CookieStore {
   base::HistogramBase* histogram_domain_per_etldp1_count_;
   base::HistogramBase* histogram_number_duplicate_db_cookies_;
   base::HistogramBase* histogram_cookie_deletion_cause_;
-  base::HistogramBase* histogram_time_get_;
   base::HistogramBase* histogram_time_mac_;
   base::HistogramBase* histogram_time_blocked_on_load_;
 

tools/metrics/histograms/histograms.xml

@@ -3407,6 +3407,9 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 </histogram>
 
 <histogram name="Cookie.TimeGet" units="ms">
+  <obsolete>
+    Deprecated as of 11/2014.
+  </obsolete>
   <owner>Please list the metric's owners. Add more owner tags as needed.</owner>
   <summary>
     The amount of time (ms) to get cookies for each URL request.