Ability to block <audio> and <video> media.

Source/core/html/MediaDocument.cpp

Index: Source/core/html/MediaDocument.cpp
diff --git a/Source/core/html/MediaDocument.cpp b/Source/core/html/MediaDocument.cpp
index cb6cd82dc89eead81c336d803698a49f733cc607..d44f9a80dff6d250ef55cd5fb6d29ef9e1c52a89 100644
--- a/Source/core/html/MediaDocument.cpp
+++ b/Source/core/html/MediaDocument.cpp
@@ -41,6 +41,7 @@
 #include "core/html/HTMLVideoElement.h"
 #include "core/loader/DocumentLoader.h"
 #include "core/loader/FrameLoader.h"
+#include "core/loader/FrameLoaderClient.h"
 #include "platform/KeyboardCodes.h"
 
 namespace WebCore {
@@ -112,6 +113,10 @@ void MediaDocumentParser::appendBytes(const char*, size_t)
     if (m_didBuildDocumentStructure)
         return;
 
+    LocalFrame* frame = document()->frame();
+    if (!frame->loader().client()->allowMedia(document()->url()))
+        return;
+
     createDocumentStructure();
     finish();
 }