Fix ResourceLoadTiming resolution lose issue.

Source/core/inspector/InspectorResourceAgent.cpp

Index: Source/core/inspector/InspectorResourceAgent.cpp
diff --git a/Source/core/inspector/InspectorResourceAgent.cpp b/Source/core/inspector/InspectorResourceAgent.cpp
index 250e03b9f284730f60377df0ad0a1108d70f89e8..30ad2bb433ab71290dd17274c1ff041c5953e986 100644
--- a/Source/core/inspector/InspectorResourceAgent.cpp
+++ b/Source/core/inspector/InspectorResourceAgent.cpp
@@ -108,6 +108,23 @@ static PassRefPtr<InspectorObject> buildObjectForHeaders(const HTTPHeaderMap& he
 
 static PassRefPtr<TypeBuilder::Network::ResourceTiming> buildObjectForTiming(const ResourceLoadTiming& timing, DocumentLoader* loader)
 {
+#ifdef ENABLE_DOUBLE_RESOURCE_LOAD_TIMING
+    double requestTime = timing.requestTime;
+    return TypeBuilder::Network::ResourceTiming::create()
+        .setRequestTime(loader->timing()->monotonicTimeToPseudoWallTime(requestTime))
+        .setProxyStart((timing.proxyStart - requestTime) * 1000)
+        .setProxyEnd((timing.proxyEnd - requestTime) * 1000)
+        .setDnsStart((timing.dnsStart - requestTime) * 1000)
+        .setDnsEnd((timing.dnsEnd - requestTime) * 1000)
+        .setConnectStart((timing.connectStart - requestTime) * 1000)
+        .setConnectEnd((timing.connectEnd - requestTime) * 1000)
+        .setSslStart((timing.sslStart - requestTime) * 1000)
+        .setSslEnd((timing.sslEnd - requestTime) * 1000)
+        .setSendStart((timing.sendStart - requestTime) * 1000)
+        .setSendEnd((timing.sendEnd - requestTime) * 1000)
+        .setReceiveHeadersEnd((timing.receiveHeadersEnd - requestTime) * 1000)

[abarth-chromium, 2013/05/22 18:19:05]

Should we create an inline helper function to do this conversion so we don't
need to do it so many times?

[James Simonsen, 2013/05/22 21:36:59]

Alternatively, why not just store the absolute values everywhere instead of
converting them to deltas (which will then be converted back to absolute values
in window.performance)?

+        .release();
+#else
     return TypeBuilder::Network::ResourceTiming::create()
         .setRequestTime(loader->timing()->monotonicTimeToPseudoWallTime(timing.convertResourceLoadTimeToMonotonicTime(0)))
         .setProxyStart(timing.proxyStart)
@@ -122,6 +139,7 @@ static PassRefPtr<TypeBuilder::Network::ResourceTiming> buildObjectForTiming(con
         .setSendEnd(timing.sendEnd)
         .setReceiveHeadersEnd(timing.receiveHeadersEnd)
         .release();
+#endif
 }
 
 static PassRefPtr<TypeBuilder::Network::Request> buildObjectForResourceRequest(const ResourceRequest& request)