Implement MediaKeySession close() and remove()

Source/platform/exported/WebContentDecryptionModuleSession.cpp

Index: Source/platform/exported/WebContentDecryptionModuleSession.cpp
diff --git a/Source/platform/exported/WebContentDecryptionModuleSession.cpp b/Source/platform/exported/WebContentDecryptionModuleSession.cpp
index 012527442aadf8c62684872713046fb775ae7129..580c114905467077ffd16dd8a546c4a6d63980a9 100644
--- a/Source/platform/exported/WebContentDecryptionModuleSession.cpp
+++ b/Source/platform/exported/WebContentDecryptionModuleSession.cpp
@@ -28,11 +28,6 @@
 
 namespace blink {
 
-static void ReportError(WebContentDecryptionModuleResult result)
-{
-    result.completeWithError(WebContentDecryptionModuleExceptionUnknownError, 0, "Not implemented.");
-}
-
 WebContentDecryptionModuleSession::~WebContentDecryptionModuleSession()
 {
 }
@@ -41,21 +36,4 @@ WebContentDecryptionModuleSession::Client::~Client()
 {
 }
 
-// FIXME: Remove the default implementations of these methods once the new
-// methods are implemented in Chromium.
-void WebContentDecryptionModuleSession::initializeNewSession(const WebString& initDataType, const unsigned char* initData, size_t initDataLength, const WebString& sessionType, WebContentDecryptionModuleResult result)
-{
-    ReportError(result);
-}
-
-void WebContentDecryptionModuleSession::update(const unsigned char* response, size_t responseLength, WebContentDecryptionModuleResult result)
-{
-    ReportError(result);
-}
-
-void WebContentDecryptionModuleSession::release(WebContentDecryptionModuleResult result)
-{
-    ReportError(result);
-}
-
 } // namespace blink