Add usage counters to XSSAuditor.

third_party/WebKit/Source/core/html/parser/XSSAuditorDelegate.cpp

Index: third_party/WebKit/Source/core/html/parser/XSSAuditorDelegate.cpp
diff --git a/third_party/WebKit/Source/core/html/parser/XSSAuditorDelegate.cpp b/third_party/WebKit/Source/core/html/parser/XSSAuditorDelegate.cpp
index 4a453c27b96e54e175a8717cff36d2b07dbf0529..ea9a3d4dc5bc31f9079837778ef86b62302466f7 100644
--- a/third_party/WebKit/Source/core/html/parser/XSSAuditorDelegate.cpp
+++ b/third_party/WebKit/Source/core/html/parser/XSSAuditorDelegate.cpp
@@ -104,6 +104,10 @@ void XSSAuditorDelegate::didBlockScript(const XSSInfo& xssInfo)
 {
     ASSERT(isMainThread());
 
+    UseCounter::count(m_document, UseCounter::XSSAuditorBlockedScript);
+    if (xssInfo.m_didBlockEntirePage)

[Tom Sepez, 2016/09/15 16:39:08]

maybe log one ore the other?

+        UseCounter::count(m_document, UseCounter::XSSAuditorBlockedScriptAndEntirePage);
+
     m_document->addConsoleMessage(ConsoleMessage::create(JSMessageSource, ErrorMessageLevel, xssInfo.buildConsoleError()));
 
     FrameLoader& frameLoader = m_document->frame()->loader();