Replace ContentSecurityPolicy::client() with a method returning an ExecutionContext

Source/modules/indexeddb/IDBRequestTest.cpp

Index: Source/modules/indexeddb/IDBRequestTest.cpp
diff --git a/Source/modules/indexeddb/IDBRequestTest.cpp b/Source/modules/indexeddb/IDBRequestTest.cpp
index d346d6c054fb79716aa3585e6731ca232b81fec3..21f6997a367d1348295d1673c58cbf4d24097ead 100644
--- a/Source/modules/indexeddb/IDBRequestTest.cpp
+++ b/Source/modules/indexeddb/IDBRequestTest.cpp
@@ -28,6 +28,7 @@
 
 #include "core/dom/DOMError.h"
 #include "core/dom/Document.h"
+#include "core/dom/SecurityContext.h"
 #include "core/events/EventQueue.h"
 #include "modules/indexeddb/IDBDatabaseCallbacks.h"
 #include "modules/indexeddb/IDBKeyRange.h"
@@ -53,7 +54,7 @@ public:
     virtual void close() OVERRIDE { }
 };
 
-class NullExecutionContext FINAL : public RefCountedWillBeGarbageCollectedFinalized<NullExecutionContext>, public ExecutionContext {
+class NullExecutionContext FINAL : public RefCountedWillBeGarbageCollectedFinalized<NullExecutionContext>, public SecurityContext, public ExecutionContext {
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(NullExecutionContext);
 public:
     void trace(Visitor* visitor) { ExecutionContext::trace(visitor); }
@@ -61,14 +62,25 @@ public:
     using RefCounted<NullExecutionContext>::ref;
     using RefCounted<NullExecutionContext>::deref;
 
+    virtual void reportBlockedScriptExecutionToInspector(const String& directiveText) OVERRIDE { }
+
+    virtual SecurityContext& securityContext() { return *this; }
+
     virtual void refExecutionContext() OVERRIDE { ref(); }
     virtual void derefExecutionContext() OVERRIDE { deref(); }
 #endif
     virtual EventQueue* eventQueue() const OVERRIDE { return m_queue.get(); }
 
     NullExecutionContext();
+
+protected:
+    virtual const KURL& virtualURL() const OVERRIDE { return m_dummyURL; }
+    virtual KURL virtualCompleteURL(const String&) const OVERRIDE { return m_dummyURL; }
+
 private:
     OwnPtr<EventQueue> m_queue;
+
+    KURL m_dummyURL;
 };
 
 NullExecutionContext::NullExecutionContext()