Implement Chromium side of MediaKeys.isTypeSupported().

content/renderer/renderer_webkitplatformsupport_impl.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/renderer_webkitplatformsupport_impl.h"
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
@@ skipping 814 matching lines @@
   RenderThread::Get()->Send(new ViewHostMsg_Keygen(
       static_cast<uint32>(key_size_index),
       challenge.utf8(),
       GURL(url),
       &signed_public_key));
   return WebString::fromUTF8(signed_public_key);
 }
 
 //------------------------------------------------------------------------------
 
+blink::WebContentDecryptionModule::KeySystemSupportedResult
+RendererWebKitPlatformSupportImpl::isKeySystemSupported(
+    const WebString& key_system,
+    const WebString& init_data_type,
+    const WebString& container,
+    const WebString& codecs,
+    const WebString& capability) {
+  return WebContentDecryptionModuleImpl::IsKeySystemSupported(
+      key_system, init_data_type, container, codecs, capability);
+}
+
+//------------------------------------------------------------------------------
+
 void RendererWebKitPlatformSupportImpl::screenColorProfile(
     WebVector<char>* to_profile) {
 #if defined(OS_WIN)
   // On Windows screen color profile is only available in the browser.
   std::vector<char> profile;
   // This Send() can be called from any impl-side thread. Use a thread
   // safe send to avoid crashing trying to access RenderThread::Get(),
   // which is not accessible from arbitrary threads.
   thread_safe_sender_->Send(
       new ViewHostMsg_GetMonitorColorProfile(&profile));
@@ skipping 337 matching lines @@
 void RendererWebKitPlatformSupportImpl::MockBatteryStatusChangedForTesting(
     const blink::WebBatteryStatus& status) {
   PlatformEventObserverBase* observer =
       platform_event_observers_.Lookup(blink::WebPlatformEventBattery);
   if (!observer)
     return;
   observer->SendFakeDataForTesting((void*)&status);
 }
 
 }  // namespace content