Revert 113479 - Revert "Revert 113250 - Add CommandBuffer::SetGetBuffer"

ppapi/c/trusted/ppb_graphics_3d_trusted.h

 // Copyright (c) 2011 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.
 
 #ifndef PPAPI_C_TRUSTED_PPB_GRAPHICS_3D_TRUSTED_H_
 #define PPAPI_C_TRUSTED_PPB_GRAPHICS_3D_TRUSTED_H_
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/pp_instance.h"
 #include "ppapi/c/pp_resource.h"
@@ skipping 41 matching lines @@
 };
 
 struct PPB_Graphics3DTrusted {
   // Creates a raw Graphics3D resource. A raw Graphics3D is intended to be used
   // with the trusted interface, through the command buffer (for proxying).
   PP_Resource (*CreateRaw)(PP_Instance instance_id,
                            PP_Resource share_context,
                            const int32_t* attrib_list);
 
   // Initializes the command buffer with the given size.
-  PP_Bool (*InitCommandBuffer)(PP_Resource context_id);
+  PP_Bool (*InitCommandBuffer)(PP_Resource context_id, int32_t size);
 
-  // Sets the buffer used for commands.
-  PP_Bool (*SetGetBuffer)(PP_Resource context, int32_t transfer_buffer_id);
+  // Gets the ring buffer for the command buffer.
+  PP_Bool (*GetRingBuffer)(PP_Resource context_id,
+                           int* shm_handle,
+                           uint32_t* shm_size);
 
   // Returns the current state.
   struct PP_Graphics3DTrustedState (*GetState)(PP_Resource context);
 
   // Create a transfer buffer and return a handle that uniquely
   // identifies it or -1 on error.
   int32_t (*CreateTransferBuffer)(PP_Resource context, uint32_t size);
 
   // Destroy a transfer buffer and recycle the handle.
   PP_Bool (*DestroyTransferBuffer)(PP_Resource context, int32_t id);
@@ skipping 18 matching lines @@
   // Like FlushSync, but returns before processing commands if the get offset is
   // different than last_known_get. Allows synchronization with the command
   // processor without forcing immediate command execution.
   struct PP_Graphics3DTrustedState (*FlushSyncFast)(PP_Resource context,
                                                     int32_t put_offset,
                                                     int32_t last_known_get);
 };
 
 #endif  // PPAPI_C_TRUSTED_PPB_GRAPHICS_3D_TRUSTED_H_