Refactor OEMCrypto Engine

Merge from widevine repo of http://go/wvgerrit/23280

This CL moves some of the oemcrypto mock classes into their own
files.  There are no real code changes.

Change-Id: I4e4a6a01d8e75051bc0eb2a5d58361c438c7f41b

libwvdrmengine/oemcrypto/mock/src/oemcrypto_session_key_table.cpp

@@ -0,0 +1,46 @@
+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+//  Mock implementation of OEMCrypto APIs
+//
+#include "oemcrypto_session_key_table.h"
+
+#include "keys.h"
+#include "log.h"
+
+namespace wvoec_mock {
+
+SessionKeyTable::~SessionKeyTable() {
+  for (KeyMap::iterator i = keys_.begin(); i != keys_.end(); ++i) {
+    if (NULL != i->second) {
+      delete i->second;
+    }
+  }
+}
+
+bool SessionKeyTable::Insert(const KeyId key_id, const Key& key_data) {
+  if (keys_.find(key_id) != keys_.end()) return false;
+  keys_[key_id] = new Key(key_data);
+  return true;
+}
+
+Key* SessionKeyTable::Find(const KeyId key_id) {
+  if (keys_.find(key_id) == keys_.end()) {
+    return NULL;
+  }
+  return keys_[key_id];
+}
+
+void SessionKeyTable::Remove(const KeyId key_id) {
+  if (keys_.find(key_id) != keys_.end()) {
+    delete keys_[key_id];
+    keys_.erase(key_id);
+  }
+}
+
+void SessionKeyTable::UpdateDuration(const KeyControlBlock& control) {
+  for (KeyMap::iterator it = keys_.begin(); it != keys_.end(); ++it) {
+    it->second->UpdateDuration(control);
+  }
+}
+
+}  // namespace wvoec_mock