Add metrics for 'upgrade-insecure-requests'.

Source/core/frame/csp/ContentSecurityPolicy.cpp

Index: Source/core/frame/csp/ContentSecurityPolicy.cpp
diff --git a/Source/core/frame/csp/ContentSecurityPolicy.cpp b/Source/core/frame/csp/ContentSecurityPolicy.cpp
index 1ffcf34c76bb03dc0f9a1dffff2e33fe44cc8677..4c5cea47ff290024ad0731c8e8201c44cc9f975f 100644
--- a/Source/core/frame/csp/ContentSecurityPolicy.cpp
+++ b/Source/core/frame/csp/ContentSecurityPolicy.cpp
@@ -177,7 +177,8 @@ void ContentSecurityPolicy::applyPolicySideEffectsToExecutionContext()
             document->enforceStrictMixedContentChecking();
         if (didSetReferrerPolicy())
             document->setReferrerPolicy(m_referrerPolicy);
-        if (m_insecureRequestsPolicy > document->insecureRequestsPolicy()) {
+        if (m_insecureRequestsPolicy == SecurityContext::InsecureRequestsUpgrade) {

[Mike West, 2015/03/25 12:12:46]

`>` made sense when reporting was bundled up with this feature. Now that it's
not, it doesn't.

+            UseCounter::count(document, UseCounter::UpgradingInsecureRequests);
             document->setInsecureRequestsPolicy(m_insecureRequestsPolicy);
             if (!securityOrigin()->host().isNull())
                 document->addInsecureNavigationUpgrade(securityOrigin()->host().impl()->hash());