Add use counter for chrome.loadTimes

third_party/WebKit/Source/web/WebLocalFrameImpl.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 2137 matching lines @@
 void WebLocalFrameImpl::forceSandboxFlags(WebSandboxFlags flags)
 {
     frame()->loader().forceSandboxFlags(static_cast<SandboxFlags>(flags));
 }
 
 void WebLocalFrameImpl::clearActiveFindMatch()
 {
     ensureTextFinder().clearActiveFindMatch();
 }
 
+void WebLocalFrameImpl::usageCountChromeLoadtimes(const WebString& metric)
+{
+    UseCounter::Feature feature;
+    if (metric == "requestTime") {
+        feature = UseCounter::ChromeLoadtimesRequestTime;
+    }
+    if (metric == "startLoadTime") {

[esprehn, 2016/08/05 20:57:36]

else if, otherwise you're doing tons of comparisons on the way down this list
when it can only match a single thing.

[panicker, 2016/08/05 23:06:14]

Done.

+        feature = UseCounter::ChromeLoadtimesStartLoadTime;
+    }
+    if (metric == "commitLoadTime") {
+        feature = UseCounter::ChromeLoadtimesCommitLoadTime;
+    }
+    if (metric == "finishDocumentLoadTime") {
+        feature = UseCounter::ChromeLoadtimesFinishDocumentLoadTime;
+    }
+    if (metric == "finishLoadTime") {
+        feature = UseCounter::ChromeLoadtimesFinishLoadTime;
+    }
+    if (metric == "firstPaintTime") {
+        feature = UseCounter::ChromeLoadtimesFirstPaintTime;
+    }
+    if (metric == "firstPaintAfterLoadTime") {
+        feature = UseCounter::ChromeLoadtimesFirstPaintAfterLoadTime;
+    }
+    if (metric == "navigationType") {
+        feature = UseCounter::ChromeLoadtimesNavigationType;
+    }
+    if (metric == "wasFetchedViaSpdy") {
+        feature = UseCounter::ChromeLoadtimesWasFetchedViaSpdy;
+    }
+    if (metric == "wasNpnNegotiated") {
+        feature = UseCounter::ChromeLoadtimesWasNpnNegotiated;
+    }
+    if (metric == "npnNegotiatedProtocol") {
+        feature = UseCounter::ChromeLoadtimesNpnNegotiatedProtocol;
+    }
+    if (metric == "wasAlternateProtocolAvailable") {
+        feature = UseCounter::ChromeLoadtimesWasAlternateProtocolAvailable;
+    }
+    if (metric == "connectionInfo") {
+        feature = UseCounter::ChromeLoadtimesConnectionInfo;
+    }
+    UseCounter::count(frame(), feature);
+}
+
 } // namespace blink