Update PPP side of Pepper CDM API to support video decoding.

ppapi/cpp/private/content_decryptor_private.cc

Index: ppapi/cpp/private/content_decryptor_private.cc
diff --git a/ppapi/cpp/private/content_decryptor_private.cc b/ppapi/cpp/private/content_decryptor_private.cc
index 585f1fb33a5c76a464598b8fb780d86a9cb072fc..7dbce34d6edd45da8fe101a2a2928e754f98d61e 100644
--- a/ppapi/cpp/private/content_decryptor_private.cc
+++ b/ppapi/cpp/private/content_decryptor_private.cc
@@ -105,19 +105,20 @@ void Decrypt(PP_Instance instance,
       *encrypted_block_info);
 }
 
-void DecryptAndDecode(PP_Instance instance,
-                      PP_Resource encrypted_resource,
-                      const PP_EncryptedBlockInfo* encrypted_block_info) {
+void DecryptAndDecodeFrame(
+    PP_Instance instance,
+    PP_Resource encrypted_resource,
+    const PP_EncryptedVideoFrameInfo* encrypted_video_frame_info) {
   void* object =
       Instance::GetPerInstanceObject(instance, kPPPContentDecryptorInterface);
   if (!object)
     return;
 
-  pp::Buffer_Dev encrypted_block(pp::PassRef(), encrypted_resource);
+  pp::Buffer_Dev encrypted_frame(pp::PassRef(), encrypted_resource);
 
-  static_cast<ContentDecryptor_Private*>(object)->DecryptAndDecode(
-      encrypted_block,
-      *encrypted_block_info);
+  static_cast<ContentDecryptor_Private*>(object)->DecryptAndDecodeFrame(
+      encrypted_frame,
+      *encrypted_video_frame_info);
 }
 
 const PPP_ContentDecryptor_Private ppp_content_decryptor = {
@@ -125,7 +126,7 @@ const PPP_ContentDecryptor_Private ppp_content_decryptor = {
   &AddKey,
   &CancelKeyRequest,
   &Decrypt,
-  &DecryptAndDecode
+  &DecryptAndDecodeFrame
 };
 
 template <> const char* interface_name<PPB_ContentDecryptor_Private>() {