Add PPAPI decryptor interfaces.

webkit/plugins/ppapi/ppapi_plugin_instance.h

Index: webkit/plugins/ppapi/ppapi_plugin_instance.h
diff --git a/webkit/plugins/ppapi/ppapi_plugin_instance.h b/webkit/plugins/ppapi/ppapi_plugin_instance.h
index ffd184b2accf4112d7a2c6104e26e7f51a90dcd2..11364279592a5f6ced228dbdbe8986eedbcfbbf1 100644
--- a/webkit/plugins/ppapi/ppapi_plugin_instance.h
+++ b/webkit/plugins/ppapi/ppapi_plugin_instance.h
@@ -17,6 +17,7 @@
 #include "base/string16.h"
 #include "googleurl/src/gurl.h"
 #include "ppapi/c/dev/pp_cursor_type_dev.h"
+#include "ppapi/c/dev/ppp_content_decryption_module_dev.h"
 #include "ppapi/c/dev/ppp_printing_dev.h"
 #include "ppapi/c/dev/ppp_find_dev.h"
 #include "ppapi/c/dev/ppp_selection_dev.h"
@@ -237,6 +238,14 @@ class WEBKIT_PLUGINS_EXPORT PluginInstance :
 
   void Graphics3DContextLost();
 
+  bool AddKey(PP_Resource key);

[ddorwin, 2012/06/06 22:16:20]

I think these parameters should be standard Chromium/WebKit types, not PP_*. We
should try to keep the PPAPI stuff hidden behind these functions.

It's probably TBD what that means for the callback and we may need to see how
the caller evolves.

[Tom Finegan, 2012/06/07 00:50:50]

I assumed PP_Resource was fine-- there are PluginInstance methods using it
already. Is there a buffer type that should be used instead?

[ddorwin, 2012/06/07 18:51:26]

Those are all for the PPB_Instance implementation. They aren't the code that
src/webkit/ calls. Specifically, we won't want to include src/ppapi/ code in
src/webkit/media/.
Not sure. The frame buffers come from src/media/, but I don't think those types
are known in src/webkit/media/ and certainly not in src/webkit/plugins/. I think
src/media is going to use std::string to hold buffers. We may need to revisit
for decrypted_frame, but that's probably a good place to start for now.

+  bool Decrypt(PP_Resource encypted_block,
+               PP_Resource decrypted_block,
+               PP_CompletionCallback callback);
+  bool DecryptAndDecode(PP_Resource encypted_block,
+                        PP_Resource decrypted_frame,
+                        PP_CompletionCallback callback);
+
   // There are 2 implementations of the fullscreen interface
   // PPB_FlashFullscreen is used by Pepper Flash.
   // PPB_Fullscreen is intended for other applications including NaCl.
@@ -411,6 +420,7 @@ class WEBKIT_PLUGINS_EXPORT PluginInstance :
                  PluginModule* module,
                  ::ppapi::PPP_Instance_Combined* instance_interface);
 
+  bool LoadContentDecryptionModuleInterface();
   bool LoadFindInterface();
   bool LoadInputEventInterface();
   bool LoadMessagingInterface();
@@ -533,6 +543,7 @@ class WEBKIT_PLUGINS_EXPORT PluginInstance :
   ResourceCreationImpl resource_creation_;
 
   // The plugin-provided interfaces.
+  const PPP_ContentDecryptionModule_Dev* plugin_decryption_interface_;
   const PPP_Find_Dev* plugin_find_interface_;
   const PPP_Messaging* plugin_messaging_interface_;
   const PPP_MouseLock* plugin_mouse_lock_interface_;