Update MediaKeys interface for EME

To support CDM_6, make the following changes:
- add SetServerCertificate
- add GetUsableKeyIds
- rename ReleaseSession to CloseSession
- add RemoveSession
- add SessionKeysChange event
- add SessionExpirationChange event

This gets the new functionality up to the blink boundary. Changes to
use these new interfaces in blink in a future CL.

For backwards compatibility with existing prefixed EME code, calls
to CancelKeyRequest() call RemoveSession() instead of CloseSession().

BUG=358271,417481
TEST=existing EME tests still pass + manual testing

Review URL: https://codereview.chromium.org/555223004

Cr-Commit-Position: refs/heads/master@{#296838}

1 files changed, 15 insertions, 1 deletions

diff --git a/content/renderer/media/webcontentdecryptionmodule_impl.cc b/content/renderer/media/webcontentdecryptionmodule_impl.cc
index 9dcb39e..60b2d04 100644
--- a/content/renderer/media/webcontentdecryptionmodule_impl.cc
+++ b/content/renderer/media/webcontentdecryptionmodule_impl.cc
@@ -12,9 +12,11 @@
 #include "base/logging.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
+#include "content/renderer/media/cdm_result_promise.h"
 #include "content/renderer/media/cdm_session_adapter.h"
 #include "content/renderer/media/crypto/key_systems.h"
 #include "content/renderer/media/webcontentdecryptionmodulesession_impl.h"
+#include "media/base/cdm_promise.h"
 #include "media/base/media_keys.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "third_party/WebKit/public/web/WebSecurityOrigin.h"
@@ -78,7 +80,8 @@ WebContentDecryptionModuleImpl* WebContentDecryptionModuleImpl::Create(
 
 WebContentDecryptionModuleImpl::WebContentDecryptionModuleImpl(
     scoped_refptr<CdmSessionAdapter> adapter)
-    : adapter_(adapter) {}
+    : adapter_(adapter) {
+}
 
 WebContentDecryptionModuleImpl::~WebContentDecryptionModuleImpl() {
 }
@@ -97,6 +100,17 @@ WebContentDecryptionModuleImpl::createSession(
   return session;
 }
 
+void WebContentDecryptionModuleImpl::setServerCertificate(
+    const uint8* server_certificate,
+    size_t server_certificate_length,
+    blink::WebContentDecryptionModuleResult result) {
+  DCHECK(server_certificate);
+  adapter_->SetServerCertificate(
+      server_certificate,
+      server_certificate_length,
+      scoped_ptr<media::SimpleCdmPromise>(new SimpleCdmResultPromise(result)));
+}
+
 media::Decryptor* WebContentDecryptionModuleImpl::GetDecryptor() {
   return adapter_->GetDecryptor();
 }