Add a WebDocument::watchCssSelectors(selectors)

Source/web/FrameLoaderClientImpl.cpp

Index: Source/web/FrameLoaderClientImpl.cpp
diff --git a/Source/web/FrameLoaderClientImpl.cpp b/Source/web/FrameLoaderClientImpl.cpp
index 13b6d1a225f1fbdac786cf7402c7807cea912881..cc2b1d23dc7e3f0766a2de8a2ee60c752c15bb34 100644
--- a/Source/web/FrameLoaderClientImpl.cpp
+++ b/Source/web/FrameLoaderClientImpl.cpp
@@ -84,6 +84,7 @@
 #include "public/platform/Platform.h"
 #include "public/platform/WebMimeRegistry.h"
 #include "public/platform/WebSocketStreamHandle.h"
+#include "public/platform/WebThread.h"
 #include "public/platform/WebURL.h"
 #include "public/platform/WebURLError.h"
 #include "public/platform/WebVector.h"
@@ -623,6 +624,13 @@ void FrameLoaderClientImpl::didDetectXSS(const KURL& insecureURL, bool didBlockE
         m_webFrame->client()->didDetectXSS(m_webFrame, insecureURL, didBlockEntirePage);
 }
 
+void FrameLoaderClientImpl::selectorMatchChanged(const Vector<String>& addedSelectors, const Vector<String>& removedSelectors)
+{
+    if (m_webFrame->client()) {
+        m_webFrame->client()->didMatchCSS(m_webFrame, WebVector<WebString>(addedSelectors), WebVector<WebString>(removedSelectors));
+    }
+}
+
 ResourceError FrameLoaderClientImpl::cancelledError(const ResourceRequest& request)
 {
     if (!m_webFrame->client())