media: Support SetCdm() on VideoDecodeAccelerator interface.

content/common/gpu/gpu_messages.h

 // 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.
 
 // Multiply-included message file, hence no include guard here, but see below
 // for a much smaller-than-usual include guard section.
 
 #include <string>
 #include <vector>
 
@@ skipping 660 matching lines @@
 // Attaches an external image stream to the client texture.
 IPC_SYNC_MESSAGE_ROUTED2_1(GpuCommandBufferMsg_CreateStreamTexture,
                            uint32, /* client_texture_id */
                            int32, /* stream_id */
                            bool /* succeeded */)
 
 //------------------------------------------------------------------------------
 // Accelerated Video Decoder Messages
 // These messages are sent from Renderer process to GPU process.
 
+// Set a CDM on the decoder to handle encrypted buffers.
+IPC_MESSAGE_ROUTED1(AcceleratedVideoDecoderMsg_SetCdm,
+                    int32_t) /* CDM ID */
+
 // Send input buffer for decoding.
 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.
+// Give the texture IDs for the textures the decoder will use for output.
 IPC_MESSAGE_ROUTED2(AcceleratedVideoDecoderMsg_AssignPictureBuffers,
                     std::vector<int32>,  /* Picture buffer ID */
                     std::vector<uint32>) /* Texture ID */
 
 // Send from Renderer process to the GPU process to recycle the given picture
 // buffer for further decoding.
 IPC_MESSAGE_ROUTED1(AcceleratedVideoDecoderMsg_ReusePictureBuffer,
                     int32) /* Picture buffer ID */
 
 // Send flush request to the decoder.
 IPC_MESSAGE_ROUTED0(AcceleratedVideoDecoderMsg_Flush)
 
 // Send reset request to the decoder.
 IPC_MESSAGE_ROUTED0(AcceleratedVideoDecoderMsg_Reset)
 
 // Send destroy request to the decoder.
 IPC_MESSAGE_ROUTED0(AcceleratedVideoDecoderMsg_Destroy)
 
 //------------------------------------------------------------------------------
 // Accelerated Video Decoder Host Messages
 // These messages are sent from GPU process to Renderer process.
 // Inform AcceleratedVideoDecoderHost that AcceleratedVideoDecoder has been
 // created.
 
+// Notify the CDM setting result.
+IPC_MESSAGE_ROUTED1(AcceleratedVideoDecoderHostMsg_CdmAttached,
+                    bool) /* success */
+
 // Accelerated video decoder has consumed input buffer from transfer buffer.
 IPC_MESSAGE_ROUTED1(AcceleratedVideoDecoderHostMsg_BitstreamBufferProcessed,
                     int32) /* Processed buffer ID */
 
 // Allocate video frames for output of the hardware video decoder.
 IPC_MESSAGE_ROUTED3(
     AcceleratedVideoDecoderHostMsg_ProvidePictureBuffers,
     int32, /* Number of video frames to generate */
     gfx::Size, /* Requested size of buffer */
     uint32 ) /* Texture target */
@@ skipping 87 matching lines @@
 IPC_MESSAGE_ROUTED0(AcceleratedJpegDecoderMsg_Destroy)
 
 //------------------------------------------------------------------------------
 // Accelerated JPEG Decoder Host Messages
 // These messages are sent from the GPU process to Browser process.
 //
 // Report decode status.
 IPC_MESSAGE_ROUTED2(AcceleratedJpegDecoderHostMsg_DecodeAck,
                     int32, /* bitstream_buffer_id */
                     media::JpegDecodeAccelerator::Error /* error */)