Add CSP header for resources with an active policy

Source/core/frame/csp/CSPDirectiveList.cpp

Index: Source/core/frame/csp/CSPDirectiveList.cpp
diff --git a/Source/core/frame/csp/CSPDirectiveList.cpp b/Source/core/frame/csp/CSPDirectiveList.cpp
index 1f8bd418ed1300c5a8c2fd50f4e55857023ce2b6..2354f9d1905494abcdd5c0e9e30139a05e877613 100644
--- a/Source/core/frame/csp/CSPDirectiveList.cpp
+++ b/Source/core/frame/csp/CSPDirectiveList.cpp
@@ -414,6 +414,39 @@ const String& CSPDirectiveList::pluginTypesText() const
     return m_pluginTypes->text();
 }
 
+bool CSPDirectiveList::shouldSendCSPHeader(Resource::Type type) const
+{
+    switch (type) {
+    case Resource::XSLStyleSheet:
+        ASSERT(RuntimeEnabledFeatures::xsltEnabled());
+        return !!operativeDirective(m_scriptSrc.get());
+    case Resource::Script:
+    case Resource::ImportResource:
+        return !!operativeDirective(m_scriptSrc.get());
+    case Resource::CSSStyleSheet:
+        return !!operativeDirective(m_styleSrc.get());
+    case Resource::SVGDocument:
+    case Resource::Image:
+        return !!operativeDirective(m_imgSrc.get());
+    case Resource::Font:
+        return !!operativeDirective(m_fontSrc.get());
+    case Resource::Media:
+    case Resource::TextTrack:
+        return !!operativeDirective(m_mediaSrc.get());
+    case Resource::Raw:
+        // This request could be for a plugin, a child frame, a worker, or
+        // something else. If there any potentially relevant policies,
+        // send the CSP header; sending it unnecessarily can't hurt.
+        return !!operativeDirective(m_objectSrc.get()) || !!m_pluginTypes.get() || !!operativeDirective(m_childSrc.get()) || !!operativeDirective(m_frameSrc.get()) || !!operativeDirective(m_connectSrc.get()) || !!operativeDirective(m_manifestSrc.get()) || !!m_formAction.get();
+    case Resource::MainResource:
+    case Resource::LinkPrefetch:
+    case Resource::LinkSubresource:
+        return false;
+    }
+    ASSERT_NOT_REACHED();
+    return false;
+}
+
 // policy            = directive-list
 // directive-list    = [ directive *( ";" [ directive ] ) ]
 //