Add TransformFeedback related APIs to command buffer: PART I.

gpu/command_buffer/common/gles2_cmd_utils_autogen.h

Index: gpu/command_buffer/common/gles2_cmd_utils_autogen.h
diff --git a/gpu/command_buffer/common/gles2_cmd_utils_autogen.h b/gpu/command_buffer/common/gles2_cmd_utils_autogen.h
index 9a4b05fd7089c6fb4f399ee0a46fbcd59efb7771..e4ccbe7ea69849f9e74b46425032c5864c3afaa2 100644
--- a/gpu/command_buffer/common/gles2_cmd_utils_autogen.h
+++ b/gpu/command_buffer/common/gles2_cmd_utils_autogen.h
@@ -69,6 +69,8 @@ static std::string GetStringTexturePool(uint32_t value);
 static std::string GetStringTextureTarget(uint32_t value);
 static std::string GetStringTextureUsage(uint32_t value);
 static std::string GetStringTextureWrapMode(uint32_t value);
+static std::string GetStringTransformFeedbackBindTarget(uint32_t value);
+static std::string GetStringTransformFeedbackPrimitiveMode(uint32_t value);
 static std::string GetStringValueBufferTarget(uint32_t value);
 static std::string GetStringVertexAttribType(uint32_t value);
 static std::string GetStringVertexAttribute(uint32_t value);