Remove remaining uses of KeySystemInfo and InitDataTypeMask

content/public/renderer/content_renderer_client.h

Index: content/public/renderer/content_renderer_client.h
diff --git a/content/public/renderer/content_renderer_client.h b/content/public/renderer/content_renderer_client.h
index 8918a5c763d64cc1eb6918527b673ec74590de82..1900f397befb2d52a751b1a8e7f625eaa078d782 100644
--- a/content/public/renderer/content_renderer_client.h
+++ b/content/public/renderer/content_renderer_client.h
@@ -65,7 +65,6 @@ class GpuVideoAcceleratorFactories;
 class KeySystemProperties;
 class MediaLog;
 class RendererFactory;
-struct KeySystemInfo;
 }
 
 namespace content {
@@ -270,12 +269,6 @@ class CONTENT_EXPORT ContentRendererClient {
   // Allows an embedder to provde a cc::ImageSerializationProcessor.
   virtual cc::ImageSerializationProcessor* GetImageSerializationProcessor();
 
-  // DEPRECATED: Gives the embedder a chance to register the key system(s) it
-  // supports by populating |key_systems|.
-  // TODO(halliwell): move all clients to KeySystemProperties API below, then
-  // remove KeySystemInfo API.  See crbug.com/457438.
-  virtual void AddKeySystems(std::vector<media::KeySystemInfo>* key_systems);
-
   // Gives the embedder a chance to register the key system(s) it supports by
   // populating |key_systems|.
   virtual void AddSupportedKeySystems(