Add use counter for chrome.loadTimes

third_party/WebKit/Source/web/WebLocalFrameImpl.cpp

Index: third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp b/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
index 69c0285241dd88a71e726ed7bb3c5e512362f0e2..d30d78c2fe875d83f7211debbab34b7a5b9319e3 100644
--- a/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
+++ b/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp
@@ -2155,4 +2155,49 @@ 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