Pass GpuMemoryBuffer backed VideoFrame from browser to renderer processes

content/common/media/video_capture_messages.h

Index: content/common/media/video_capture_messages.h
diff --git a/content/common/media/video_capture_messages.h b/content/common/media/video_capture_messages.h
index f599d5f53e5366a4fd6aa6996a72505999cff256..e00904d17a47e42116c792dc4c0cf22776c52baf 100644
--- a/content/common/media/video_capture_messages.h
+++ b/content/common/media/video_capture_messages.h
@@ -10,6 +10,7 @@
 #include "ipc/ipc_message_macros.h"
 #include "media/base/video_capture_types.h"
 #include "media/base/video_frame.h"
+#include "ui/gfx/gpu_memory_buffer.h"
 
 #undef IPC_MESSAGE_EXPORT
 #define IPC_MESSAGE_EXPORT CONTENT_EXPORT
@@ -40,7 +41,7 @@ IPC_STRUCT_BEGIN(VideoCaptureMsg_BufferReady_Params)
   IPC_STRUCT_MEMBER(media::VideoFrame::StorageType, storage_type)
   IPC_STRUCT_MEMBER(gfx::Size, coded_size)
   IPC_STRUCT_MEMBER(gfx::Rect, visible_rect)
-  IPC_STRUCT_MEMBER(gpu::MailboxHolder, mailbox_holder)
+  IPC_STRUCT_MEMBER(std::vector<gpu::MailboxHolder>, mailbox_holders)
 IPC_STRUCT_END()
 
 // TODO(nick): device_id in these messages is basically just a route_id. We
@@ -59,6 +60,14 @@ IPC_MESSAGE_CONTROL4(VideoCaptureMsg_NewBuffer,
                      int /* length */,
                      int /* buffer_id */)
 
+// Tell the renderer process that a new GpuMemoryBuffer backed buffer is
+// allocated for video capture.
+IPC_MESSAGE_CONTROL4(VideoCaptureMsg_NewGpuMemoryBuffer,
+                     int /* device id */,
+                     std::vector<gfx::GpuMemoryBufferHandle> /* gmb_handles */,
+                     gfx::Size /* dimensions */,
+                     int /* buffer_id */)
+
 // Tell the renderer process that it should release a buffer previously
 // allocated by VideoCaptureMsg_NewBuffer.
 IPC_MESSAGE_CONTROL2(VideoCaptureMsg_FreeBuffer,