Implement IPCs and VideoCapture::Client interfaces for texture capture

content/renderer/media/video_capture_message_filter.cc

Index: content/renderer/media/video_capture_message_filter.cc
diff --git a/content/renderer/media/video_capture_message_filter.cc b/content/renderer/media/video_capture_message_filter.cc
index a8620ed7856f262a9c8c55fc6bc00c3cf68fb121..9fd39143f53b4c2a5f6902d06c132ca85efbfda7 100644
--- a/content/renderer/media/video_capture_message_filter.cc
+++ b/content/renderer/media/video_capture_message_filter.cc
@@ -58,6 +58,8 @@ bool VideoCaptureMessageFilter::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(VideoCaptureMessageFilter, message)
     IPC_MESSAGE_HANDLER(VideoCaptureMsg_BufferReady, OnBufferReceived)
+    IPC_MESSAGE_HANDLER(VideoCaptureMsg_MailboxBufferReady,
+                        OnMailboxBufferReceived)
     IPC_MESSAGE_HANDLER(VideoCaptureMsg_StateChanged, OnDeviceStateChanged)
     IPC_MESSAGE_HANDLER(VideoCaptureMsg_NewBuffer, OnBufferCreated)
     IPC_MESSAGE_HANDLER(VideoCaptureMsg_FreeBuffer, OnBufferDestroyed)
@@ -105,13 +107,13 @@ void VideoCaptureMessageFilter::OnBufferCreated(
     int buffer_id) {
   Delegate* delegate = find_delegate(device_id);
   if (!delegate) {
-    DLOG(WARNING) << "OnBufferCreated: Got video frame buffer for a "
-        "non-existent or removed video capture.";
+    DLOG(WARNING) << "OnBufferCreated: Got video SHM buffer for a "
+                     "non-existent or removed video capture.";
 
     // Send the buffer back to Host in case it's waiting for all buffers
     // to be returned.
     base::SharedMemory::CloseHandle(handle);
-    Send(new VideoCaptureHostMsg_BufferReady(device_id, buffer_id));
+    Send(new VideoCaptureHostMsg_BufferReady(device_id, buffer_id, 0));
     return;
   }
 
@@ -121,20 +123,42 @@ void VideoCaptureMessageFilter::OnBufferCreated(
 void VideoCaptureMessageFilter::OnBufferReceived(
     int device_id,
     int buffer_id,
-    base::TimeTicks timestamp,
-    const media::VideoCaptureFormat& format) {
+    const media::VideoCaptureFormat& format,
+    base::TimeTicks timestamp) {
   Delegate* delegate = find_delegate(device_id);
   if (!delegate) {
-    DLOG(WARNING) << "OnBufferReceived: Got video frame buffer for a "
-        "non-existent or removed video capture.";
+    DLOG(WARNING) << "OnBufferReceived: Got video SHM buffer for a "
+                     "non-existent or removed video capture.";
+
+    // Send the buffer back to Host in case it's waiting for all buffers
+    // to be returned.
+    Send(new VideoCaptureHostMsg_BufferReady(device_id, buffer_id, 0));
+    return;
+  }
+
+  delegate->OnBufferReceived(buffer_id, format, timestamp);
+}
+
+void VideoCaptureMessageFilter::OnMailboxBufferReceived(
+    int device_id,
+    int buffer_id,
+    const gpu::MailboxHolder& mailbox_holder,
+    const media::VideoCaptureFormat& format,
+    base::TimeTicks timestamp) {
+  Delegate* delegate = find_delegate(device_id);
+
+  if (!delegate) {
+    DLOG(WARNING) << "OnMailboxBufferReceived: Got video mailbox buffer for a "
+                     "non-existent or removed video capture.";
 
     // Send the buffer back to Host in case it's waiting for all buffers
     // to be returned.
-    Send(new VideoCaptureHostMsg_BufferReady(device_id, buffer_id));
+    Send(new VideoCaptureHostMsg_BufferReady(device_id, buffer_id, 0));
     return;
   }
 
-  delegate->OnBufferReceived(buffer_id, timestamp, format);
+  delegate->OnMailboxBufferReceived(
+      buffer_id, mailbox_holder, format, timestamp);
 }
 
 void VideoCaptureMessageFilter::OnBufferDestroyed(