Pass DecryptConfig parameters over IPC and use it in AVDA.

content/common/gpu/gpu_messages.h

Index: content/common/gpu/gpu_messages.h
diff --git a/content/common/gpu/gpu_messages.h b/content/common/gpu/gpu_messages.h
index a6fa99eaf22f5c91f23036aa46baec0c7f652837..7843f2bdf5d557e16c643ee7383e36068c6b9fda 100644
--- a/content/common/gpu/gpu_messages.h
+++ b/content/common/gpu/gpu_messages.h
@@ -28,6 +28,7 @@
 #include "gpu/ipc/gpu_command_buffer_traits.h"
 #include "ipc/ipc_channel_handle.h"
 #include "ipc/ipc_message_macros.h"
+#include "media/base/decrypt_config.h"
 #include "media/base/video_types.h"
 #include "media/video/jpeg_decode_accelerator.h"
 #include "media/video/video_decode_accelerator.h"
@@ -148,6 +149,16 @@ IPC_STRUCT_BEGIN(AcceleratedJpegDecoderMsg_Decode_Params)
   IPC_STRUCT_MEMBER(uint32, output_buffer_size)
 IPC_STRUCT_END()
 
+IPC_STRUCT_BEGIN(AcceleratedVideoDecoderMsg_Decode_Params)
+  IPC_STRUCT_MEMBER(int32, bitstream_buffer_id)
+  IPC_STRUCT_MEMBER(base::SharedMemoryHandle, buffer_handle)
+  IPC_STRUCT_MEMBER(uint32, size)
+  IPC_STRUCT_MEMBER(base::TimeDelta, presentation_timestamp)
+  IPC_STRUCT_MEMBER(std::string, key_id)
+  IPC_STRUCT_MEMBER(std::string, iv)
+  IPC_STRUCT_MEMBER(std::vector<media::SubsampleEntry>, subsamples)
+IPC_STRUCT_END()
+
 IPC_STRUCT_BEGIN(AcceleratedVideoEncoderMsg_Encode_Params)
   IPC_STRUCT_MEMBER(int32_t, frame_id)
   IPC_STRUCT_MEMBER(base::SharedMemoryHandle, buffer_handle)
@@ -276,6 +287,11 @@ IPC_STRUCT_TRAITS_BEGIN(gfx::GLSurfaceHandle)
   IPC_STRUCT_TRAITS_MEMBER(transport_type)
 IPC_STRUCT_TRAITS_END()
 
+IPC_STRUCT_TRAITS_BEGIN(media::SubsampleEntry)
+  IPC_STRUCT_TRAITS_MEMBER(clear_bytes)
+  IPC_STRUCT_TRAITS_MEMBER(cypher_bytes)
+IPC_STRUCT_TRAITS_END()
+
 //------------------------------------------------------------------------------
 // GPU Messages
 // These are messages from the browser to the GPU process.
@@ -667,11 +683,8 @@ IPC_SYNC_MESSAGE_ROUTED2_1(GpuCommandBufferMsg_CreateStreamTexture,
 // These messages are sent from Renderer process to GPU process.
 
 // Send input buffer for decoding.
-IPC_MESSAGE_ROUTED4(AcceleratedVideoDecoderMsg_Decode,
-                    base::SharedMemoryHandle, /* input_buffer_handle */
-                    int32, /* bitstream_buffer_id */
-                    uint32, /* size */
-                    base::TimeDelta) /* presentation_timestamp */
+IPC_MESSAGE_ROUTED1(AcceleratedVideoDecoderMsg_Decode,
+                    AcceleratedVideoDecoderMsg_Decode_Params)
 
 // Sent from Renderer process to the GPU process to give the texture IDs for
 // the textures the decoder will use for output.