Adding GetStreamInfo functionality (and passing corresponding unit test).

command_buffer/common/cross/resource.h

 /*
  * Copyright 2009, Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 116 matching lines @@
                            // buffer.
   Uint32 semantic_size;    // the size of the parameter semantic, including
                            // the terminating nul character. Will always be
                            // set even if the semantic doesn't fit into the
                            // buffer.
   DataType data_type;      // the data type of the parameter.
   Uint32 data_size;        // the size of the parameter data, in bytes.
 };
 }  // namespace effect_param
 
+namespace effect_stream {
+struct Desc {
+  Uint32 semantic;         // the semantic type
+  Uint32 semantic_index;
+};
+}  // namespace effect_stream
+
 namespace texture {
 // Texture flags.
 enum Flags {
   DYNAMIC = 0x01,  // This texture is dynamic and is expected to have
                    // its data updated often.
 };
 
 // Texel formats.
 enum Format {
   XRGB8,
@@ skipping 53 matching lines @@
   POINT,
   LINEAR,
   NUM_FILTERING_MODE
 };
 }  // namespace sampler
 
 }  // namespace command_buffer
 }  // namespace o3d
 
 #endif  // O3D_COMMAND_BUFFER_COMMON_CROSS_RESOURCE_H__